
Sourdough bread is generally considered to be a good option for those on a low-FODMAP diet. This is because the fermentation process that sourdough bread goes through turns wheat flour from high FODMAP to low FODMAP. However, it is important to note that not all sourdough breads are created equal, and some may be higher in FODMAPs than others. Traditional sourdough bread is made with a starter culture and is left to ferment for several days, while some commercial sourdough breads may add yeast to speed up the process, which can result in higher FODMAP levels. When choosing a sourdough bread, it is important to look for one that is made with a sourdough starter or culture and has been left to ferment for a sufficient amount of time. Additionally, portion size is also important, as even low-FODMAP foods can become problematic if consumed in large quantities.
| Characteristics | Values |
|---|---|
| Is sourdough ok on a FODMAP diet? | It depends on the ingredients and how it was made. |
| Ingredients | Traditional sourdough should only contain flour, water, and salt. It should not have any added yeast, enzymes, preservatives, emulsifiers, or additives to speed up the baking process. |
| Fermentation process | Sourdough bread is safer for people on a low FODMAP diet because some of the fermentable sugars are already fermented during the bread-making process. The fermentation process also weakens gluten and breaks down fructans. |
| Types of flour | Sourdough bread made from wheat, wholemeal wheat, and spelt flours are low FODMAP. White flour sourdough is also low FODMAP in small servings. |
| Yeast | True sourdough is made with a starter culture of wild yeast and bacteria in place of added baker's yeast. The starter is made by mixing flour and water and letting wild yeast colonize it. The presence of added yeast in the ingredients may indicate that the dough did not spend enough time fermenting, which could make it high FODMAP. |
| Portion size | Portion size is important when consuming sourdough on a FODMAP diet. It is recommended to start with a small serving of 1-2 slices and see how your body tolerates it. |
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What You'll Learn

Sourdough bread made from wheat flour is low FODMAP
Sourdough bread can be a tasty addition to the low-FODMAP diet. However, not all sourdough breads are low-FODMAP. The best sourdough bread for a low-FODMAP diet is one that uses traditional methods, including a slow fermentation process. This process is essential to reducing the amount of fructans in the bread, a main carbohydrate and FODMAP found in bread varieties.
Sourdough bread made from wheat flour is low-FODMAP because the sourdough starter helps break down the fructans. The fermentation process used to make sourdough bread reduces its fructan content. During the long fermentation process, the microorganisms in the sourdough feed on the FODMAPs, resulting in a lower fructan content. This is why wheat flour, which is a high-FODMAP ingredient, can be used to make low-FODMAP sourdough bread.
When purchasing store-bought sourdough bread, make sure to ask whether it is made using traditional techniques, otherwise, it might not be low in FODMAPs. Whole wheat bread can be considered low-FODMAP depending on the serving size. While wheat flour is a high-FODMAP ingredient, wheat products such as whole wheat bread can still be low-FODMAP. For example, one slice of whole wheat bread at 24 grams is low-FODMAP.
White wheat sourdough bread is low-FODMAP at two slices, as long as it is made in the traditional way. Spelt flour is even better because it is the traditional flour and has fewer problems. However, it is important to note that portion size is also important when it comes to low-FODMAP foods. It is recommended to start with a small serving of two slices of sourdough bread made from wheat flour to see how your body tolerates it.
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Sourdough bread made from white flour is low FODMAP in small servings
Sourdough bread is one of the best-tolerated breads on a low-FODMAP diet. However, not all sourdough breads are low-FODMAP. The FODMAP content depends on the ingredients used and the fermentation process.
Sourdough bread made from wheat, wholemeal wheat, and spelt flours are low-FODMAP because they contain reduced levels of fructans and GOS. The fermentation process breaks down the fructans in wheat flour, turning it from high-FODMAP to low-FODMAP. Therefore, sourdough bread made from white flour is also low-FODMAP, but only in small servings.
When purchasing store-bought sourdough bread, ensure it is made using traditional techniques, as this is crucial for reducing the FODMAP content. Traditional sourdough bread should only contain flour, water, and salt, with no added yeast, enzymes, preservatives, emulsifiers, or additives. The dough should be left to ferment for several days, and then leavened for at least 24 hours.
Some sources suggest that sourdough bread made with a live sourdough culture or starter can be low-FODMAP, even with shorter fermentation times. The sourdough culture breaks down the fructan content of the flour, making the bread low-FODMAP in a two-slice serving.
It is important to note that portion size is crucial when it comes to FODMAP diets. While a small serving of sourdough bread made from white flour may be low-FODMAP, a larger serving could become high-FODMAP. Therefore, it is recommended to start with a small serving and adjust as needed.
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Sourdough bread made from spelt flour is low FODMAP
Sourdough bread is one of the best-tolerated breads on the low FODMAP diet, but not all sourdoughs are low FODMAP. The FODMAP content depends on the ingredients used and the fermentation process.
To ensure your sourdough bread is low FODMAP, make sure it is made with a live sourdough culture and allowed to prove for at least a few hours before baking. Traditional sourdough bread should only contain three ingredients: flour, water, and salt. It should not have any added yeast or enzymes, preservatives, emulsifiers, or additives to speed up the baking process.
When choosing a low FODMAP sourdough bread, look for one that lists spelt flour as the main flour used. Bakers Delight makes a low FODMAP loaf that has been certified as safe for the low FODMAP diet. The recommended serving size for low FODMAP sourdough bread is two slices.
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True sourdough bread is made without baker's yeast
Sourdough bread is generally considered to be one of the best tolerated breads on a low-FODMAP diet. However, not all sourdoughs are low-FODMAP. The key factor is the fermentation process and whether it has been sped up or not. Traditional sourdough bread is made with just three ingredients: flour, water, and salt. It does not contain any added yeast or enzymes, preservatives, emulsifiers, or additives to speed up the baking process.
Some commercial sourdough breads may add yeast to speed up the fermentation process, but this can reduce the effectiveness of the fermentation in breaking down FODMAPs. If you are following a low-FODMAP diet, it is important to check the ingredients and choose a sourdough bread that is made without added yeast and has undergone a traditional fermentation process.
There are many recipes available for making your own no-yeast sourdough bread at home. These recipes typically use a sourdough starter, flour, water, and salt, and require a bit of patience as the dough rises slowly over time. However, the result is a delicious, tangy sourdough bread that is well tolerated by those on a low-FODMAP diet.
In summary, true sourdough bread is made without baker's yeast and relies on a natural fermentation process using a sourdough starter. This traditional method results in a bread that is generally well tolerated on a low-FODMAP diet.
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Sourdough bread is one of the best-tolerated breads on a low-FODMAP diet
FODMAP stands for Fermentable Oligosaccharides, Disaccharides, Monosaccharides, and Polyols, which are types of carbohydrates. These sugars can be difficult for the body to digest, so reducing their presence in food can help alleviate digestive issues.
To be considered a true low-FODMAP sourdough, the bread should be made with a starter culture and left to ferment for a prolonged period, typically over 12 hours. This fermentation process is key to reducing the FODMAP content. The starter culture is made by mixing flour and water and allowing wild yeast to colonize it. The dough is then left to 'prove', during which time the yeast and bacteria feed on the carbohydrates, including the FODMAPs, and create gas, causing the dough to rise.
It is important to note that not all sourdough breads are created equal. Some commercial sourdoughs are made with baker's yeast and have a shorter fermentation time, which results in a higher FODMAP content. When choosing a low-FODMAP sourdough, look for those made with a traditional process, using a starter culture and a long fermentation time. Additionally, ensure that the bread does not contain other high-FODMAP ingredients, such as inulin, dried fruit, or garlic.
While sourdough bread can be a good option for those on a low-FODMAP diet, it is always important to listen to your body and adjust your diet accordingly. Some people may find they tolerate sourdough well, while others may find it still triggers digestive symptoms. It is also worth noting that portion sizes matter, and it is generally recommended to start with a small serving to see how your body tolerates it.
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Frequently asked questions
Sourdough bread is generally considered to be one of the best tolerated breads on a low-FODMAP diet. However, it depends on the ingredients and how it was made.
Sourdough bread should only contain three or four ingredients: flour, water, salt, and a sourdough starter. The starter is made by mixing flour and water and letting wild yeast colonize it. The starter replaces the need for baker's yeast.
Avoid sourdough with added baker's yeast, preservatives, emulsifiers, additives, or other high-FODMAP ingredients like inulin, dried fruit, and garlic.
If the bread is labelled "sourdough" but doesn't have a starter listed, and also lists yeast as an ingredient, it may not be real sourdough. Look for bread that lists "sourdough starter" or "sourdough culture" in the ingredients.
Wheat, white wheat, wholemeal wheat, and spelt flours are suitable for low-FODMAP sourdough. Spelt flour is naturally lower in FODMAPs than modern wheat varieties.










































