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Sourdough for Health

Internationally recognised as a leading authority on bread nutrition and digestibility, Dr Vanessa Kimbell holds a doctorate in Baking as Lifestyle Medicine and preventative healthcare.

Have you ever wondered why some breads make you feel tired, foggy and achy — or been puzzled that some leave you bloated while others don’t? If you can eat sourdough but not other bread, these articles and recipes are a great place to spark curiosity: learn how bread interacts with the gut microbiome, discover how your unique nutrigenetics shape your response, and read practical, evidence-based guidance. Cutting through the nonsense with clear, useful explanations, Vanessa shares tips, information, advice, recipes and methods to bake, eat and share healthy bread to support digestion and overall health. You can read more about training in personalising bread at The Sourdough School, or book a 1:1 meeting to get your bread personalised.

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Crumb Texture in Sourdough Bread

Understand and improve the interior structure of your artisan loaves

What Is Crumb Texture in Sourdough Bread?

Crumb texture refers to the internal structure of a baked loaf, the arrangement of holes, air pockets, and overall softness or density. In sourdough baking, crumb texture is not only a visual marker of quality but also reflects the fermentation process, hydration level, flour choice, and dough handling techniques.

Why Crumb Texture Matters in Sourdough Baking

The texture of the crumb shows how well the dough was fermented and shaped. A soft, open crumb is often preferred in high-hydration artisan sourdough, while a denser, more uniform crumb may be ideal for wholegrain or enriched loaves. Both have their place, depending on the type of bread and its intended use.

At The Sourdough School, we teach students how to assess and improve crumb texture as part of understanding fermentation, gluten development, and overall bread quality.

How to Improve Crumb Texture in Sourdough Bread

Several key factors shape crumb texture:

  • Hydration: Higher hydration typically yields a more open crumb
  • Fermentation: Longer, slow fermentation enhances structure and flavour
  • Flour type: Using botanical blend flours adds fibre and nutrients but may affect openness
  • Handling: Techniques like stretch and fold and bassinage strengthen gluten for better gas retention

We cover all these methods in our 3?Day Introduction to The BALM Workshops, allowing students to see their impact firsthand.

sourdough open crumb

Tools and Ingredients That Support Better Crumb Texture

Using the right tools can make a big difference. Our starter kits and bread-making equipment are designed to support optimal fermentation and gluten development.

Many home bakers also use our bread kits, which feature carefully balanced botanical ingredients that contribute to both structure and flavour.

Observing Crumb Texture to Improve Your Baking

At The Sourdough School, we encourage bakers to assess the crumb after baking as part of learning. Is it tight, gummy, overly open, or well-balanced? These visual and tactile cues help guide refinements in hydration, fermentation, and shaping.

In our online courses and community membership, students share crumb photos, gain feedback, and learn how to adapt their techniques based on outcomes.

Take a look at our courses at The Sourdough School

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.

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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
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