
If you have irritable bowel syndrome (IBS), you may have been advised to follow a low-FODMAP diet. FODMAP stands for Fermentable-Oligo–Di-, Mono-saccharides and Polyols, which are types of sugars that are not completely digested or absorbed in the intestines. Mushrooms are often thought to be high in FODMAPs, but some varieties are considered low FODMAP, including oyster mushrooms. This makes them a good option for people with IBS.
| Characteristics | Values |
|---|---|
| Are oyster mushrooms low FODMAP? | Yes |
| Are dried oyster mushrooms low FODMAP? | It is recommended to stick to fresh oyster mushrooms |
| Are oyster mushrooms safe for people with IBS? | Yes |
| What is the serving size for low FODMAP oyster mushrooms? | 1 cup, 75 grams, 40 grams, 6 mushrooms |
| What are some recipes with oyster mushrooms? | Stir-fry, risotto, soup, stew, sauce, salad, omelet |
| What are FODMAPs? | Fermentable-Oligo–Di-, Mono-saccharides and Polyols |
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What You'll Learn

Oyster mushrooms are low FODMAP in 1-cup/75g servings
If you're following a low-FODMAP diet, you may have been advised to avoid mushrooms, which are often high in FODMAPs, specifically mannitol. However, not all mushrooms are high in FODMAPs, and oyster mushrooms are one of the few types that are safe to eat.
Oyster mushrooms have a slightly sweet and subtly nutty flavour and are versatile in cooking. They can be added to soups, stews, sauces, stir-fries, and risottos. They are also suitable for children with IBS, as they are well-tolerated and mild in taste.
According to Monash University, oyster mushrooms are low FODMAP in 1-cup/75g servings. The Monash University FODMAP app does not give a maximum serving size for oyster mushrooms. However, it's important to note that serving size matters, and some individuals with sensitivity may need to avoid high-FODMAP foods completely.
While fresh oyster mushrooms are known to be low FODMAP, there is limited information on the FODMAP content of dried oyster mushrooms. Therefore, it is recommended to stick to fresh oyster mushrooms during the first phase of a low-FODMAP diet.
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They are safe for people with IBS
Oyster mushrooms are considered a safe option for people with IBS. They are low in FODMAPs, which are simple and complex carbohydrates that are not fully broken down and absorbed by the intestines. FODMAPs can cause pain and discomfort for people with IBS, as they have highly sensitive guts.
FODMAPs are fermentable carbohydrates, which include oligo-saccharides, di-saccharides, mono-saccharides, and polyols. These sugars are not completely digested or absorbed in the intestines. When they reach the small intestine, they attract water and move slowly, and when they pass into the large intestine, they are fermented by gut bacteria, producing gas. This extra gas and water cause the intestinal wall to stretch and expand, causing pain and discomfort for those with IBS.
Oyster mushrooms are one of the few types of mushrooms that are low in FODMAPs, making them a suitable option for those with IBS. They have a slightly sweet and nutty flavour and are versatile in cooking, going well in soups, stews, stir-fries, and sauces. They can be pan-fried, sautéed, or grilled, and added to various dishes.
It is important to note that while oyster mushrooms are generally considered safe for people with IBS, individual sensitivities may vary. Serving size also matters, as larger portions may trigger symptoms. It is always recommended to consult a specialised dietitian or medical professional for tailored guidance and to understand your unique triggers.
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They have a slightly sweet and nutty flavour
Oyster mushrooms are low FODMAP, making them a great option for people with IBS. FODMAP is an acronym for Fermentable-Oligo–Di-, Mono-saccharides and Polyols, which are groups of sugars that are not completely digested or absorbed in the intestines. When they reach the small intestine, they move slowly, attracting water. Then, when they pass into the large intestine, they are fermented by gut bacteria, producing gas. The extra gas and water cause the intestinal wall to stretch and expand, causing pain and discomfort, especially for people with IBS.
Oyster mushrooms have a slightly sweet and nutty flavour, making them a tasty addition to soups, stews, sauces, stir-fries, and risottos. They are versatile and can be included in various dishes. They are also suitable for children with IBS, as they are well-tolerated and have a mild taste. When cooking with oyster mushrooms, it is recommended to add them in the last few minutes of cooking or try sautéing them.
It is important to note that while oyster mushrooms are low FODMAP, not all mushrooms are. Other types of mushrooms, such as shiitake, porcini, and button mushrooms, may contain higher levels of FODMAPs and should be consumed in moderation or avoided altogether, depending on individual sensitivity. Serving size also matters, as some mushrooms with higher FODMAP levels may be safe in smaller portions.
For those following a low-FODMAP diet, it is recommended to work with a specialised dietitian to navigate which mushrooms are suitable and safe. Additionally, the Monash University FODMAP app can be a helpful resource to check the FODMAP content of different foods.
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They are versatile and can be used in stir-fries, soups, stews, and sauces
Oyster mushrooms are versatile and can be used in stir-fries, soups, stews, and sauces.
For stir-fries, oyster mushrooms can be cooked in a frying pan or a wok. The mushrooms are stir-fried for about 7 minutes or until golden brown. They can be paired with Asian-inspired vegetables like baby kailan, thick/sweet soy sauce, and smoky sesame oil. Oyster mushrooms are also a great meat substitute for a vegan stir-fry.
Oyster mushrooms can be used to make a delicious soup. A recipe for oyster mushroom soup includes vegetable broth, water, carrots, bay leaves, lemongrass, tamari, lemon juice, vinegar, and kombu. The soup is brought to a boil and cooked for 5 minutes, then left to simmer for another 30 minutes. It is seasoned with freshly ground black pepper and can be served with scallions, sesame seeds, and/or red pepper flakes.
Oyster mushrooms can also be used in stews. A recipe for an oyster mushroom stew includes sautéing the mushrooms with garlic, butter, and parsley. The mushrooms are then added to a stew with other ingredients and cooked until tender.
Oyster mushrooms can be used in sauces such as oyster sauce. The mushrooms are stir-fried and then combined with oyster sauce, dark soy sauce, sugar, and chicken broth. The sauce is thickened with cornstarch and drizzled with sesame oil before serving.
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Canned and fresh oyster mushrooms are low FODMAP
Oyster mushrooms have a slightly sweet and subtly nutty flavour that works well in soups, stews, sauces, and stir-fries. They are versatile and can be included in various dishes. They are also suitable for children with IBS, who can safely eat them in stir-fries or risottos.
The low FODMAP serving size for fresh oyster mushrooms is 75 grams or 1 cup. However, the Monash University FODMAP app does not give a maximum serving size for oyster mushrooms. Instead, it uses a “green traffic light” rating system, which allows for multiple servings of “green” foods per meal.
Canned mushrooms can have a lower FODMAP content than their fresh counterparts because FODMAPs are water-soluble and can leach out of the food into the canning liquid. It is important to rinse and drain canned mushrooms before use.
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