
Mushrooms are a type of fungus that is commonly used in cooking, especially in European, Asian, and South American cuisines. They are a source of fibre and protein and have exceptional nutritional value. However, for those with inflammatory digestive diseases such as IBS, certain mushrooms are off the menu due to their high FODMAP content. FODMAP stands for Fermentable Oligo-, Di-, Mono-saccharides and Polyols, which are short-chain carbohydrates that the small intestine cannot efficiently absorb.
While it is true that many mushrooms are high in FODMAPs, it is a myth that all mushrooms are high FODMAP. Mushrooms have varying FODMAP content, and some are considered low FODMAP. For instance, oyster mushrooms, champignon mushrooms, slippery jack mushrooms, and black fungi mushrooms are all considered low FODMAP in specific serving sizes. On the other hand, mushrooms such as shiitake, portobello, enoki, and saffron milkcap are considered high FODMAP.
It is important to note that serving size matters, as some low FODMAP mushrooms can become high FODMAP in larger servings. Additionally, the form of the mushroom (fresh, dried, or canned) can impact its FODMAP content. For those with IBS, it may be beneficial to use the Monash University FODMAP app to check the FODMAP content of different mushrooms and choose low FODMAP varieties.
| Characteristics | Values |
|---|---|
| Oyster Mushrooms | Low FODMAP in 1 cup serves |
| King Oyster Mushrooms | Low FODMAP |
| Canned Champignon Mushrooms | Low FODMAP in 1/2 cup serves |
| Dried Porcini Mushrooms | Low FODMAP in 1 tablespoon |
| Dried Shiitake Mushrooms | Low FODMAP in 2 mushrooms |
| Dried Black Chanterelle Mushrooms | Low FODMAP in 1/8 cup |
| Button Mushrooms | Low FODMAP in 7 grams |
| Portobello Mushrooms | Low FODMAP in 10 grams |
| Red Pine Mushrooms | Low FODMAP in 17 grams |
| Slippery Jack Mushrooms | Low FODMAP in 40 grams |
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What You'll Learn

Oyster mushrooms are low FODMAP
Oyster mushrooms are one of the few types of mushrooms that are low in FODMAPs, which are sugars that are not completely digested or absorbed in the intestines. According to Monash University, oyster mushrooms are low FODMAP in 1-cup serving sizes. They have a slightly sweet, subtle nutty flavor and are versatile in cooking, making them a tasty addition to soups, stews, stir-fries, risottos, and sauces.
For those with IBS or other digestive issues, it is important to choose low-FODMAP foods to manage symptoms and reduce discomfort. Oyster mushrooms are a safe option for people with IBS, as they are well-tolerated and can be enjoyed in a variety of dishes. They can be pan-fried, grilled, or sautéed, and added to meals as a side or topping.
It is worth noting that while oyster mushrooms are low FODMAP, other types of mushrooms, such as shiitake, portobello, and button mushrooms, may contain higher levels of FODMAPs. Additionally, dried mushrooms tend to have higher FODMAP levels than fresh mushrooms, so it is recommended to stick to fresh oyster mushrooms when following a low-FODMAP diet.
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Canned champignons are low FODMAP
Canned champignons, also known as button mushrooms, are low-FODMAP in half-cup or 40-gram servings. They are popular in Asian cuisine and are commonly used in winter-warming dishes, providing a mild and earthy taste. The canning process reduces the FODMAP content of champignons as the mannitol and fructans leach into the brine, lowering the overall FODMAP content of the mushrooms.
Fresh button mushrooms, on the other hand, are considered high-FODMAP and should be avoided during the first phase of a low-FODMAP diet. It is important to note that portion size matters, as some low-FODMAP mushrooms can become high-FODMAP in larger servings. For example, dried porcini mushrooms are low-FODMAP at a serving size of one tablespoon, but become high-FODMAP in larger servings due to their mannitol content.
Other low-FODMAP mushrooms include oyster mushrooms, which have a slightly sweet and nutty flavor, and dried shiitake mushrooms, which add a rich umami flavor to dishes. Black fungi mushrooms, commonly used in Chinese soups and stir-fries, are also low-FODMAP in one-cup servings.
It is worth noting that not all mushrooms are high-FODMAP, and you can enjoy a variety of mushrooms in moderation while on a low-FODMAP diet. However, it is always recommended to consult a reliable source or a healthcare professional for specific guidelines and serving sizes.
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Black fungi mushrooms are low FODMAP
If you're on a low-FODMAP diet, you may have been advised to avoid mushrooms. However, not all mushrooms need to be avoided. FODMAP testing reveals that some mushrooms are still low-FODMAP options, even in multiple servings.
Black fungi mushrooms, for instance, have been tested by FODMAP Friendly and are considered low FODMAP in 1-cup servings. This type of mushroom is commonly used in soups and stir-fries in China. They are often sold dried and should be cooked before consuming. According to Monash University, these mushrooms are low FODMAP at a 2-mushroom serving but become high FODMAP in larger servings. Therefore, it's important to be mindful of the serving size, as even low-FODMAP mushrooms can become high FODMAP in larger portions.
In addition to black fungi mushrooms, there are several other types of mushrooms that are considered low FODMAP. These include oyster mushrooms, canned champignon (button) mushrooms, dried shiitake mushrooms, and dried porcini mushrooms. Each of these varieties has specific serving size recommendations to ensure they remain low FODMAP.
It's worth noting that while some mushrooms are low FODMAP, others are high in FODMAPs and should be avoided during the elimination phase of a low FODMAP diet. It's always recommended to consult reliable sources and seek expert advice when making dietary choices, especially if you have specific health concerns or conditions.
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Dried shiitake mushrooms are low FODMAP
If you're following a low-FODMAP diet, you may have been advised to avoid mushrooms. However, not all mushrooms need to be excluded from your diet. Dried shiitake mushrooms, for example, are low FODMAP, but only at a serving size of two mushrooms. If you consume more than that, dried shiitake mushrooms are high in the FODMAP mannitol.
Dried shiitake mushrooms are versatile and can be used in a variety of dishes. They can be added to soups, where they will soften as the soup cooks. If you're not using them in a soup, soak them in water and remove the stems, which are too tough to eat. You can also sauté them with olive oil and the green parts of scallions, and then toss them with gluten-free pasta for a comforting low-FODMAP meal.
It's important to note that while dried shiitake mushrooms are low FODMAP in small servings, fresh shiitake mushrooms may contain higher FODMAP levels. Fresh shiitake mushrooms are considered high in FODMAPs, particularly mannitol, so they are typically recommended to be avoided during the initial phase of a low-FODMAP diet. Once your symptoms have improved, you can gradually reintroduce high-FODMAP foods like fresh shiitake mushrooms and assess your tolerance.
In addition to dried shiitake mushrooms, there are several other types of mushrooms that are considered low FODMAP. Oyster mushrooms, for instance, are low FODMAP in one-cup serving sizes. They have a mild, nutty flavour and are versatile in cooking, making them suitable for stir-fries, soups, stews, and risottos. King oyster mushrooms, a larger variety, can be grilled like a steak. Canned champignon mushrooms, also known as button mushrooms, are low FODMAP at a serving size of six mushrooms or 40 grams. The canning process tends to reduce their FODMAP content.
While these mushroom varieties are generally considered low FODMAP, it's important to remember that individual tolerance levels can vary. The FODMAP content of mushrooms can also depend on factors such as preparation and serving size. Therefore, it's always a good idea to monitor your symptoms and adjust your diet accordingly.
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Slippery Jack mushrooms are low FODMAP
Slippery Jack mushrooms, also known as Sticky Bun mushrooms, are low FODMAP at a serving size of 40g. They have a spongy texture and a mild taste and are best served in dishes such as soups. They can also be fried, used in stews, pickled, used in stuffings and sauces, and in rice dishes. Slippery Jacks are used in many European and Russian recipes and can be prepared in a variety of ways.
However, it is important to note that Slippery Jack mushrooms are only low FODMAP in moderate portions. In larger amounts, they are high in the FODMAP mannitol, which may trigger IBS symptoms. Therefore, it is recommended to avoid other moderate FODMAP portions of foods in the same meal to avoid potential issues.
FODMAPs are carbohydrates that can cause symptoms in people with IBS. While following a low-FODMAP diet, it is crucial to be mindful of serving sizes, as certain low-FODMAP mushrooms can become high FODMAP in larger servings.
Other examples of low-FODMAP mushrooms include canned champignon mushrooms, oyster mushrooms, and dried shiitake mushrooms. These mushrooms can be safely consumed in controlled portions while on a low-FODMAP diet.
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Frequently asked questions
No, while many mushrooms are high FODMAP, some are low FODMAP.
Oyster mushrooms, canned champignon mushrooms, black fungi mushrooms, dried shiitake mushrooms, slippery jack mushrooms, and dried porcini mushrooms are all low FODMAP.
Fresh button mushrooms, portobello mushrooms, red pine mushrooms, saffron milkcap mushrooms, enoki mushrooms, dried porcini mushrooms, and shiitake mushrooms are all high FODMAP.
FODMAP stands for Fermentable Oligo-, Di-, Mono-saccharides and Polyols. FODMAPs are carbohydrates that can cause symptoms in people with IBS.

























