• Skip to main content
  • Skip to after header navigation
  • Skip to site footer

Sourdough - transform your bread & your health

The Healthiest Bread in the World: Science-Backed Baking for a Better Gut Heath

Vanessa Kimbell is a time-served baker who specialises in gut health and trained in the art of sourdough bread in the Dordogne. A bestselling author, she holds a doctorate in Baking as Lifestyle Medicine and Preventative Health and is a member of BANT. Vanessa combines deep expertise in sourdough with unparalleled knowledge of the science of bread and digestion. At The Sourdough School, she teaches personalised artisan bread tailored to optimise gut health and genetics. Discover healthy bread recipes, tips, and techniques featuring sourdough fermentation, wholegrain benefits, and personalised baking advice—designed to inspire a slower, healthier approach to baking, eating, and sharing bread.

WhatsApp
[email protected]
Follow on Instagram

  • Facebook
  • Instagram
  • Pinterest
  • Twitter
  • WhatsApp
The Sourdough School Course Information
Subscribe to our newsletter

.

  • Home
    • The School
    • What is Baking as Lifestyle Medicine?
    • Get in Touch
    • Evidence Based
  • Dr Kimbell
    • Personalised Bread Assessments
    • Books by Dr Kimbell
    • Podcast on Apple
    • Podcast on Spotify
    • Case Studies
  • Courses
    • Workshops
    • Baking Retreats
    • Online Diploma
    • Join The Club
  • Articles
    • Understanding Sourdough
    • Bread & Health
    • Bread & Nutrition
    • Bread & Gut Health
    • Bread Matters
  • Baking
    • Recipes
    • Bread Making Ingredients
    • Sourdough Ingredients
    • Sourdough Bread Kits
  • Shop & Resources
    • Sourdough Baking Equipment
    • Flours from Farmers Directory
    • Add Farmer to the Directory
    • Bread Health Calculator
    • The Glossary
    • Research papers
    • Sourdough Hydration Calculator
    • British Artisan Flour Mills by Region
    • Equipment advice pages
Heath Care Providers: Training In Prescribing Baking As Lifestyle Medicine

San Francisco Sourdough

23 June 2016 by Dr Vanessa Kimbell

Time at Tartine

I’ve always documented the sources of recipes I share. Why?

I’ve noticed many years ago that most teachers lacked depth of knowledge. When I asked myself what my students deserved and how I might inspire change, I knew I did not want to teach diluted knowledge. Whilst I understand that people copy, celebrate and share, I equally regard lack of acknowledgement as an insult to both the person you are teaching and the originator of the technique or recipe. So, I hold myself to a standard, and when I teach, I share knowledge from an authentic experience. It is a standard that is as much about myself as the person who taught me firsthand knowledge, and it is always acknowledged in the recipe or lesson. Acknowledgement is as important as the privilege of teaching, even in my own research and development.

From 2011, following the publication of Chad Robertsons’ sourdough book, the most frequent question I was asked in class was what the difference is between San Francisco-style sourdough and French-style pain de Levain. I had a pretty good understanding of French pain de levain; it is practically in my blood, but really, to get under the skin of how Californian sourdough was different, I wasn’t prepared to pretend, regurgitate, or create poor imitations of a classic bread from a second-hand recipe. I refused to teach the retarded boule until

I had to find out the differences, which, despite having three small children, meant travelling 5000 miles to the west coast of California to spend time in the bakeries and learn first-hand the processes, the flour, and the timings, and eating lots of sourdoughs. When the opportunity came up to interview Chad Robertson, I got to spend almost three weeks in San Francisco and hang out at Tartine on the 18th in The Mission, and I also learned from all the other bakers in San Francisco. My Tartine recordings and photos were destined for the BBC Radio 4 Food Programme, but the recordings are now available to listen to in a Podcast of Baker Richard Hart below

Baker Richard Hart chatting With Vanessa at Tartine about amazing bread and the way he approaches sourdough and what he loves most about bread

Below is the article I wrote in 2016 as I returned from Tartine

June 2016 – I have been asked so many questions since I got home from my trip, and rather than reply individually, I thought I would answer all the questions here:

Whilst you were there, did you spend time with Chad Robertson?

collage of sourdough and bakers

No, not much. It was somewhat strange.  After several months of emails, I flew over to meet Chad, do the recordings, and learn more about his approach to bread. I must admit to feeling somewhat taken aback that upon arrival in the bakery, as arranged, Chad was not there.  After an hour of waiting, drinking coffee, getting odd looks from the staff and feeling that something was up, Chad’s PA emailed a brief line to say that Chad would not be meeting me as he was in Italy.

For a few minutes, I suppressed my jetlagged emotional response of feeling vulnerable and wanting to burst into tears. It was a big deal to travel so far, and it was also the anniversary of Mott’s Death. Yet in so many ways, this was a good thing that could have happened because a few minutes later, the head baker, Richard Hart, popped his head into the cafe area and told me not to worry, he would cover all the things I needed to understand, and he was amazing. As I got to work with and got to work with Richard Hart and the sourdough team in the bakery, I began to understand that it was Richard and the team who were doing the baking, and the time I spent with them was extraordinary.

Was Tartine porridge bread the best you’ve ever had?

Truthfully, yes.  It was the best ever. The loaf that was outstanding was actually the porridge loaves, which Richard developed the method for after ” standing in line in a bakery in California chatting about porridge with a genuine 1960’s hippie.” Richard generously shared the technique and the thought process that made him rethink the way he approached porridge bread with me. It was a game changer, and I think that the porridge bread is the best Sourdough in the world. The second bread I fell in love with was the seeded Danish. It was amazing, and Richard Hart’s recipes can be found here, kindly donated to the Knead Peace book.

Will you be sharing or teaching the Tartine Method?

No. The BALM protocol means that I have my own ways of approaching diversity and lifestyle medicine into a retarded bread. I prioritise diversity by using museli that includes legumes, and botanicals, and live finishes to the bread. Richard’s technique of creating structure is one I will openly credit to his creation of knowledge. Credit where it is due. I think each baker has their own method. I teach about increasing nutrition & digestibility, and everything you need to know about baking Tartine bread is already in the books that Chad has published.

fresh tarine loaf of sourdough
Tartine bread is baked daily

How does the traditional French method differ from the Californian method?

There are some significant differences. Primarily it is down to hydration and length of fermentation, temperature, and shaping techniques, although there are differences in the flour too. The French sourdough is lighter in flavour in general. San Francisco celebrates the sour, but there are exceptions. The Tartine loaf is French-style fresh, with higher hydration and a deeper, more complex flavour, moister crumb and bien cuit crust. 

tartine dough Richard Hart
Richard’s bread. Who is actually British, from East London. As you might well imagine, he has a great work ethic equalled by a wicked sense of humour and an unrivalled knowledge of naturally leavened bread. 

What do you most enjoy about the bakeries?

I loved meeting the bakers. In particular, I absolutely loved meeting Kathleen at Della Fattoria. Richard took the time to take me on a tour and introduce me to the bakeries in the area, and she adores Richard. They have a lovely rapport, and she is a warm, strong, generous woman; I wanted to stay longer and learn from her. Meeting Steve from Acme Bakery was wonderful.  I found Belinda at Patisserie B warm and funny and possibly baking better French patisserie than the French! Also, spending an afternoon with Michel Suas from The San Francisco Baking Institute was a huge privilege.

What was the highlight?

I don’t think there could be a baker in the world who would disagree that hanging out with the Tartine bread baking team is about as cool as baking gets. It was just as amazing as I had hoped for. After a few days, I found myself inadvertently calling the bakery Tar – team. It is a tight space to work in, but there is a real buzz and an equal balance of male and female bakers, which was fantastic. (It was so male-orientated when I was training.) I especially love Chrystal and her sense of mischief, and Aris and the front-of-house staff who looked after me with strong coffee and pastries when I was feeling a bit tired and jet-lagged.

The bread team are seriously good at what they do, but they also laugh and mercilessly take the mickey out of each other in that affectionate way that people do when they are more like family than family. It was a reminder of how good it is actually to work in a bakery; the banter, camaraderie and laughter was infectious. Truthfully, I felt quite tearful leaving. I really miss that kind of atmosphere and energy, and perhaps it was simply the 3-year anniversary of Mott Greens’ death, but I felt a strong sense of connection instantaneously that I cannot explain.  It was very beautiful and reminded me of the joy and abandon I used to feel when I worked in the bakery in Nadaillac as a girl. 

Richard Hart at Tartine
Richard Hart has been Running the Sourdough Bakery At Tartine for 7 years.

At the centre of the team is Richard Hart, Tartine’s head baker, and Chad’s right-hand man. Richard is actually British, from East London. As you might well imagine, he has a great work ethic, equalled by a wicked sense of humour and an unrivalled knowledge of naturally leavened bread. As a hands-on manager, he bakes from the heart and can be found working with the dough as part of the production team. Having the chance to stand back and observe, it is clear that Richard also never stops thinking. His knowledge is accentuated by a creative streak, and you can practically hear his mind ticking as he develops ideas and flavours with an instinct I have rarely seen before;  it didn’t come as a surprise to realise that it was Richard who developed the bread recipes in Tartine’s third book. So, to answer the question … the absolute highlight of my trip was doing some recording with Richard. Being around such an amazing baker was inspiring: for me, there is no greater gift than inspiration.

Did you get to meet Chad Robertson in the end?

Yes. In the end, Chad did pop into the bakery for a couple of days. It seemed that absolutely everyone loved to stop and chat with Chad. So yes,  I got to chat, during which time I met half of the neighbourhood; almost everyone who walks past stops to pass the time of day. It is a warm community, and Chad seems very much part of it. We met briefly three times during my stay. I spent most of my time in the bakery and with baker Richard Hart, who actually did all the baking. Eventually, I recorded some interesting audio. However, Chad was incredibly busy and in Rome for the first part of my visit. He is in the middle of an exciting new project, building large versions of the bakery for up-scale production.  I hope he retains the love and friendship of the people who work with him as he grows the business; this is the real secret to this bread. 

Do you have any recordings of Chad Robertson chatting?

Did you get your books signed by Chad?

Of course!

Do I have some Tartine starter?

Yes… Richard Hart Gave me some Tartine starter to take home and some bread. I have incorporated it into my starter  and have kept the Tartine one as my wholegrain starter

Will I be selling it? Er, no, but I am happy to gift a starter to anyone who brings a pot to me for personal use only.

Did you visit any other bakeries?

I managed to visit about a dozen other bakeries, tried the sourdough, and met the bakers from Acme Bakery, the San Francisco Baking Institute, Patisserie B, Della Fattoria where Richard Hart worked), Craftsman and Wolves, Arizmendi Bakery, Boudin Bakery, Nightingale Bakery, The Neighbour Bakehouse, and several others, all making fabulous sourdough.

What did you think of Boudin Bakery?

It was not to my taste. That is all I’m saying.

Did you learn anything new about sourdough?

Yes, lots, there is always something to learn, especially about the future of sourdough and the direction of artisan bread. I think one of the key things was learning about the flour and observing the production methods first-hand. I learnt a lot about the history of sourdough from bread historian and author William Rubel. William and I have been chatting on his bread history group for a couple of years, and he has a unique insight into the history of bread. He is utterly gorgeous, and I can’t thank him enough for coming to meet me… William is currently writing a full history for the University of California.

What ideas will you use from your trip?

The most important information was the full picture of San Francisco Sourdough, but the ideas that most inspired me were actually from Tartine Bar.  The food was absolutely incredible, and I found myself pouring over a recipe book that had sat and languished on my bookshelf for a long time. The whole approach set me on fire, so ironically it wasn’t so much the sourdough but the extension of the fermentation that I will integrate into what I do here.

Will you go back?

After tasting such amazing bread I am not sure I could resist returning.

Update 2024

Richard Hart Opened Hart Bakery in Copenhagen and is now building a new bakery called Green Rhino in Mexico.

Please take a look at his new book.

All reasonable care is taken when writing about health aspects of bread, but the information it contains is not intended to take the place of treatment by a qualified medical practitioner. You must seek professional advice if you are in any doubt about any medical condition. Any application of the ideas and information contained on this website is at the reader's sole discretion and risk.

Learn more about…

Joining
The Sourdough
Club
Attending
Workshops &
Retreats
About The
Sourdough School
Certificate
Enroling on The
Sourdough School
Diploma

Never miss a post

Enter your email address


diversity blend flour

Sourdough Ingredients

Sourdough Baking Equipment

The Sourdough School book

Sourdough School Baking Books

Sourdough Bread Kits

Dr Vanessa Kimbell

About Dr Vanessa Kimbell

Dr. Vanessa Kimbell is a leading expert in nutrition and the digestibility of bread. Her doctorate focuses on Baking as Lifestyle Medicine and preventative health, specialising in personalising bread for gut health and genetics. She is the Course Director at The Sourdough School, a world-renowned centre of research and education in bread, the gut microbiome, and the impact of bread on health, based in Northamptonshire. She is currently writing her 6th book and is a best-selling international author.

More information about Vanessa can be found:
The Sourdough School team page: About Vanessa Kimbell

The Sourdough Club: thesourdoughclub.com

Instagram accounts: @SourdoughClub
@SourdoughSchool @vanessakimbell

Facebook: Vanessa Kimbell Baker

LinkedIn: Vanessa Kimbell

Previous Post:Sourdough16657Sourdough Recipe – From Charlotte Pike’s book Fermented
Next Post:Wholemeal Sourdough RecipeWholemeal Sourdough recipe

Reader Interactions

Comments

  1. v pham

    29 August 2016 at 2:23 pm

    Great post! Your insight into the industry from the behind the scenes and historic perspective.. fantastic! Most people can appreciate the bread .. the product of a lot of hard work: research, trial and error and labor of love. Baking bread is a more than the commercialized, industrialized method of the past 40 years.. its revival back to the roots benefits everyone. Nutritionally speaking, Taste! Flavor and Craft.
    Each bakery/ baker adds a new nuance via their interpretation of bread. It maybe just flour, water, leaven, salt… but the combinations permutations are almost infinite in the complexity of interpretation and execution. Because if all SF sourdough was boudin… oh boy what fun is that? 😉
    Keep it up. You, Chad and the dedicated artisans of the ART of Baking… Thank you.

    I recently visited Tartine, but the crowds, parking and timing (bread wasn’t ready for sale yet) denied me a opportunity to purchase a loaf. I guess there is always next time..

    Reply
    • Aimee Kubik

      22 September 2024 at 6:23 pm

      I want to buy San Francisco sourdough bread for sandwiches. I want to know if I buy a loaf of this bread is it genuine sourdough bread and good for the children and me. I have no time to bake and must rely on bread bought at the usual supermarket, so is San Francisco sourdough ok ugh bread good, real?

      Reply

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *


Todays live for diploma students will be on 'How t Todays live for diploma students will be on 'How to engage your patient in the lifestyle changes of the BALM' with @vanessakimbell 

In their 6pm live session, we help keep our students on track with the syllabus and discuss the application of Baking As Lifestyle Medicine to the 6 pillars of Lifestyle medicine, applying the research papers, application of the Research, and how this ties into prescribing, along with guest lecturers, discussions and sharing knowledge.

#lifestylemedicine #health #functionalmedicine #nutrition #integrativemedicine #healthylifestyle #wellness #lifestyle #rcgp #dietitian #nutritionist #healthcareprofessional #holistichealth #healthyliving #plantbased #guthealth #naturopathicmedicine #selfcare #functionalnutrition  #naturopathicdoctor #foodasmedicine #foodismedicine #lifestylegoals #cpd #lifestylechange #mentalhealth #sourdough #sourdoughschool #bakeforhealth
BAKE, ANALYSE, EAT; RECALIBRATE & REPEAT. 📆 Th BAKE, ANALYSE, EAT; RECALIBRATE & REPEAT.

📆 The Sourdough School Clinic - Thursdays 8pm - for students of The Sourdough School 

✏️ In this weekly live session, we cover technical baking questions. Students can submit their Baking Record Sheets in advance of the session.

📋 We look at the details of our student's bakes - the specifics of the flour, timings and temperatures. Using our sourdough record sheets Vanessa will make suggestions on how they might modify, or recalibrate the next time they bake.

Follow the link in the bio to learn more about becoming a student at The Sourdough School 👆

#sourdough #sourdoughschool #bread #sourdoughlove #sourdoughlover #naturalleavened #leavening #levain #realbread #breadmaking #bakebread #makebread #makerealbread #learntobakebread #breadmakingclass #sourdoughstories #bakingforlove #bakingtherapy #sourdoughbaking
IBS AWARENESS MONTH Do you suffer from irritable IBS AWARENESS MONTH

Do you suffer from irritable bowel syndrome (IBS)? It can be tough to deal with the uncomfortable symptoms of stomach cramps, constipation, diarrhoea and bloating. But did you know that making dietary changes, such as incorporating sourdough bread into your diet, could help alleviate some of those symptoms?

Studies have shown that sourdough's long, slow fermentation process can reduce IBS symptoms. Plus, during #ibsawarenessmonth, we're exploring how adding different herbs and spices to your sourdough can further improve both the flavour and the digestion of your bread.

Let's talk about gut health, fermentation, and how sourdough can be a delicious and healthy addition to your diet. Join the conversation and share your experiences with IBS and sourdough.

#guthealth #healyourgut #healthygut #guthealing #guthealthmatters #letfoodbethymedicine #foodasmedicine #gutbrainconnection #nutrientdense #micronutrients #digestivehealth #nutritionfacts #microbiome #breadandguts #ibsawarenessmonth
THE SOURDOUGH SCHOOL – HAND CARVED WOODEN LAME THE SOURDOUGH SCHOOL – HAND CARVED WOODEN LAME

One of the biggest issues around using a plastic lame to score sourdough, of course, is that eventually the blade will become blunt and the lame could end up in landfill.  So several years ago I talked to my dear friend EJ about developing a lame with a replaceable blade. And he came up with this very beautiful hand carved wooden lame.

Very sadly EJ is no longer with us. Recently a friend of EJ’s who is also a wood turner and carver offered to make these again for us in remembrance of our dear friend.

Follow the link in the bio to our shop where you can find our full selection of wooden sourdough tools 👆

#sourdough #sourdoughschool #bread #sourdoughlove #sourdoughlover #naturalleavened #leavening #levain #realbread #breadmaking #bakebread #makebread #makerealbread #learntobakebread #breadmakingclass #sourdoughstories #bakingforlove #bakingtherapy #sourdoughbaking
The Baking As Lifestyle Medicine (BALM) Protocol The Baking As Lifestyle Medicine (BALM) Protocol

The current food system is broken at multiple levels, from the pesticides used in our soils to the emulsifiers and additives adulterating industrially-processed foods. Nowhere is this more apparent than in the bread we eat.  The figures reported by the UK Flour Millers say that bread is bought by a staggering “99.8% of British households” and that “the equivalent of nearly 11 million loaves are sold each day. Approximately 60-70% of the bread we eat is white and sandwiches are thought to account for 50% of overall bread consumption. Average bread purchases are the equivalent of 60.3 loaves per person per year.” 

Most bread sold is made by modern processing methods that strip heart-healthy whole grains of their nutrient contents, resulting in low-fibre bread with a high glycemic index. Over time, white processed bread can increase a person’s risk of insulin resistance alongside other lifestyle diseases.

We’re on a mission to revolutionise the bread making process at every level – from soil to slice. The rules governing this are laid out in our Baking As Lifestyle Medicine protocol. 

#lifestylemedicine #health #functionalmedicine #nutrition #integrativemedicine #healthylifestyle #wellness #lifestyle #rcgp #dietitian #nutritionist #healthcareprofessional #holistichealth #healthyliving #plantbased #guthealth #naturopathicmedicine #selfcare #functionalnutrition  #naturopathicdoctor #foodasmedicine #foodismedicine #lifestylegoals #cpd #lifestylechange #mentalhealth #sourdough #sourdoughschool #bakeforhealth
Follow on Instagram

About

Email: [email protected]
Tel: +44 (0)7813308301

The Sourdough School Ltd
Registered in England & Wales: 08412236

Terms & Conditions

Privacy Policy

  • Facebook
  • Instagram
  • Pinterest
  • Twitter

Latest Posts

Tim Spector’s Zoe Bread

Learn some Affordable Healthy Bread-Making Tips

Tim Spector’s Recipes for Gut Health from His New Book Food for Life

Protected: An Invitation to Join Dr Kimbell on the Bread & Guts Podcast

Podcast: Farming under threat.

BANT Member
Lifecode GX

Subscribe

Enter your email address

Search


Terms & Conditions | Competition Terms & Conditions | Privacy Policy
Copyright © 2009–2025 Vanessa Kimbell | Login
Registered in England and Wales: 08412236
Website by Callia Web