• 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

Basic Tinned Sourdough loaf Recipe, (Ambient Overnight) – full version for Print

This is my most basic recipe. It has guidance on timings and temperatures that fit with everyday life, suiting a typical 9am to 5.30pm working day. It allows you to refresh your starter before you go to/start work and bake to a convenient schedule. When sourdough is this easy, you are much more likely to bake.

This is also the kind of sourdough bread that you can make in no time. Discounting waiting times, it takes only about 15 minutes of total effort to make. The long, slow fermentation is called an Ambient ferment as it uses the ambient. the temperature of your kitchen to prove.  We use wholegrain flour, combined with the oil, which makes this loaf deliciously satiating. What’s more, because it is made in a tin, you can ferment it for a few hours longer in the fridge if you need a further reduction of the gluten load.

Ingredients:

  • 375g water at 23°C
  • 250g stoneground organic wholegrain flour
  • 250g organic strong white flour
  • 100g bubbly lively sourdough starter (second build – starter that has been refreshed twice)
  • 10g fine sea salt
  • butter, ghee or coconut oil, to grease the tin
  • A small handful of oats
  • about 1 tablespoon oil to drizzle over the top and around the sides of the loaf (we used olive oil)

Equipment:

  • large mixing bowl
  • large 900g (2lb) loaf tin
  • Clean tea towel
  • Wooden spoon
  • Sheet of greaseproof paper

How To Make Your Own Starter

It takes between 3 – 7 days to create a robust active starter. To create your own sourdough starter you just need two basic ingredients — organic wholemeal flour and water.

To successfully make a sourdough starter you will also need –

  • A warm room. Not hot, not cold, just a room that is pleasant to be in.
  • A non-reactive container to make and store the starter in (starters are acidic and will react with certain metals). I prefer a glass container, but plastic is fine too.
  • A whisk to incorporate air.
  • A breathable cover or lid, such as a clean tea towel, coffee filter or a loose-fitting disposable shower cap.
  • A space to catch your wild yeast with no other cultured foods nearby, or there will be a cross over and you might not get the yeast you need.

A simple way to start is to put a 1/2 cup of organic stoneground wholemeal flour and just over a 1/2 cup of warm water (28oC) in a large jar. If the mixture feels too thick, add a little more water –  it should be like a thick milkshake.

Whisk the mixture vigorously to incorporate air and cover with your breathable lid. Allow your mixture to sit in a warm place for 12 to 24 hours. Between the 12 or 24 hour mark, you might be lucky enough to see some bubbles, indicating that organisms are present, but don’t worry if not. Repeat the feeding twice a day by removing a cup full of the mixture (approximately half) and replacing it with a 1/2 cup of flour and a 1/2 cup of water at 28°C (i.e. replace the amount you took out). Stir vigorously, cover, and wait another 12 to 24 hours.

From now on you will need to remove half of the starter before every feeding and discard it so that the microorganisms in the starter you keep can multiply without your jar overflowing.

How long it takes to get your starter going depends on many factors, but it can take anything from 3-7 days. The sourdough starter should be beautifully bubbly and have enough yeasts and bacteria to be active enough to bake with. At this stage it should double in 3-4 hours.

 

Time and temperature guidelines:

Day 1

9pm – refresh your sourdough starter. Use tap water at about 22°C

Day 2

8am – refresh your sourdough starter. Use tap water at about 22°C

8pm – prepare and weigh out the ingredients

8.30pm – mix the dough. Use your bubbly, lively starter. Try to mix your dough at a temperature of 23°C. Leave the dough in the tin on the kitchen side overnight. When you’re done making the dough, put your starter back in the fridge at a temperature of about 5°C.

Day 3

8 am onwards – you can bake at any time from 8 am, or you can store the dough in the fridge and bake any time until 4 p.m.

Directions:

Double refresh

It is important to build the microbes in the starter if you only bake once a week. A double refreshment as outlined in the timetable above will make a beautiful loaf.

Mix

In a large bowl, mix 350g of your water with the starter, remembering to pay attention to the temperature of the water. Mix well – getting plenty of oxygen in at this point helps the yeast to reproduce. Add the flour and salt and mix until all the ingredients come together.

You don’t need to knead – just mix well, then wait 10 minutes. You can then add the last 25g water, incrementally (2 x 12.5g), over the course of 5–10 minutes, allowing each addition to absorb well. This technique helps create a beautiful open crumb because the gluten forms stronger bonds when the dough is less hydrated.

Prepare the tin by greasing a sheet of baking parchment lightly with butter, ghee, coconut oil or lard (not olive oil.) Then line the tin with the baking parchment. put the oast in the liner and shake the tin tipping it to each side until the oats have stuck to the butter no all four sides and the base of the tin. Transfer the dough to the tin.

Prove

Leave the dough overnight on the kitchen table, covered with a clean tea towel. As a general guide, the ambient temperature at the School is generally about 23°C.

In the morning, the dough will be 50 percent bigger. If you prefer, at this stage you can make your loaf sourer, and therefore more digestible, by transferring it to the fridge for another 3–4 hours before baking.

Bake

Preheat your oven to 220°C/428F/Gas mark 7 for at least 30 minutes before you are ready to bake. Place a small pan of boiling water at the bottom of the oven (or use a Dutch oven if you can fit your tin inside one). The extra steam from the water will help to form a beautiful crust.

Drizzle the olive oil over the top and around the sides of the loaf. Reduce the heat to 180°C/355F/Gas Mark 4 and bake for about 45–50 minutes. I don’t give precise timings, as everyone’s oven is different. Bake to the point that you like the look of the loaf – it should be a beautiful golden colour. Remove the loaf from the oven and cool in the tin for a few minutes before removing it from the tin and leaving to cool completely on a wire rack.

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

Previous Post:A with a glass jar in his hands with sourdough starter inside, placed on a wooden table.How to create a Sourdough Starter
Next Post:A basic Sourdough Boule – Full version for Print (Overnight Retarded)spun iron cloche

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