
Mushrooms are kosher, but there are a few things to keep in mind. Firstly, it's important to check for bugs, as insects are not kosher. Secondly, while fresh, dried, or frozen mushrooms without any questionable ingredients are fine, canned or pre-cooked mushrooms may require kosher certification to ensure they haven't come into contact with non-kosher products during processing. Additionally, the blessing for mushrooms is different from that of plant-based foods because mushrooms do not grow from the ground and are not seed-bearing plants.
| Characteristics | Values |
|---|---|
| Are dried mushrooms kosher? | Yes, dried mushrooms are kosher. |
| Blessing for mushrooms | "by whose word all things came to be" or "that all came to being from His word" |
| Canned or precooked mushrooms | Require kosher certification |
| Bugs in mushrooms | Not kosher |
| Toxic mushrooms | Not kosher |
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What You'll Learn

Dried mushrooms are kosher if they are free of bugs
Mushrooms are kosher, but there are some things to keep in mind when it comes to their preparation and consumption according to kosher law. Firstly, it is important to ensure that the mushrooms are free of bugs, as insects are not kosher. Before consuming mushrooms, it is recommended to rinse them and check a few samples to ensure they are insect-free. This is especially important for portabella mushrooms, as the brown area under the top should be removed to avoid any potential bug infestation.
The method of preparation can also impact the kosher status of mushrooms. Fresh, dried, or frozen mushrooms without any questionable ingredients are generally considered kosher. However, canned or pre-cooked mushrooms may require kosher certification because there is a possibility of cross-contamination with non-kosher foods during the production process. Therefore, it is advisable to look for a symbol of kosher certification on the label when purchasing canned mushrooms.
The blessing recited before consuming mushrooms is also different from that of plant-based foods. Since mushrooms do not grow from the ground like plants, the blessing "Blessed are you... the Creator of the fruit of the earth" is not recited. Instead, the blessing said on meat and other non-plant-based foods, "That all came to being from His word" ("she'hakol ni'hi'ye bidvaro"), is more appropriate.
It is worth noting that some varieties of mushrooms, such as cordyceps, have been the subject of debate within the Jewish community. While some sources consider lab-grown cordyceps powder kosher, others warn against consuming it due to its parasitic nature, taking over the bodies of caterpillars, worms, or insects.
In conclusion, dried mushrooms are kosher as long as they are free of bugs and have not been processed with non-kosher ingredients or on equipment used for non-kosher foods. It is always advisable to check for kosher certification and properly inspect and prepare mushrooms before consumption to ensure they comply with kosher law.
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Canned dried mushrooms may be non-kosher due to processing
While mushrooms are kosher, there are some caveats to be aware of when consuming them. In practical law, although mushrooms are always kosher, there may be kashrut concerns that arise during their processing. Fresh, dried, or frozen mushrooms without any questionable ingredients are considered kosher. However, canned or pre-cooked mushrooms require kosher certification because non-kosher ingredients may be used in the canning process, or they may be processed on the same equipment as non-kosher food.
The kosher certification ensures that the mushrooms have not been contaminated by non-kosher products and that they are not infested with insects. It is important to check for bugs before consuming mushrooms, as they can render the mushrooms non-kosher. The brown area under the top of portabella mushrooms, for example, should be removed to avoid any potential insect infestation.
The blessing recited before eating mushrooms is also important to consider. Since mushrooms do not grow from the ground like plants, the blessing said on most plant foods ("Blessed are You... the Creator of the fruit of the earth") is not recited. Instead, the blessing said on meat and other non-plant-based foods ("That all came to being from His word") is more appropriate.
The medieval Jewish philosopher Maimonides warned against eating mushrooms in his Mishneh Torah due to the poisonous nature of certain varieties. Some Eastern European Jewish communities considered mushrooms non-kosher well into the 20th century because of this warning. However, mushrooms have been an important ingredient in Ashkenazi cooking, where they were used in various dishes such as soups, stews, and fillings.
In summary, while dried mushrooms themselves are kosher, canned dried mushrooms may be non-kosher due to the processing and the potential use of non-kosher ingredients or equipment. It is important to look for kosher certification on the label to ensure that the canned mushrooms have been processed in a kosher manner.
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Blessing for mushrooms is by whose word all things came to be
Although mushrooms are kosher, there are some considerations to keep in mind. Mushrooms are fungi, and while they often grow on the ground, they do not receive their nourishment from the soil as plants do. This distinction is important in determining the appropriate blessing for mushrooms. The blessing recited for vegetables, "ha'adamah" or "Blessed are You... who creates the fruit of the earth", is not applicable to mushrooms. Instead, the proper blessing for mushrooms is the default blessing, "by whose word all things came to be" or "she'hakol ni'hi'ye bidvaro" in Hebrew.
The Talmud, in Brachot 40b, discusses the blessing to be recited before consuming mushrooms, recognising that they do not obtain their sustenance from the earth like plants. This is further supported by the fact that fungi, unlike plants, do not produce their own carbon but rather derive it from other organisms, typically decomposing plants.
When it comes to consuming mushrooms, it is crucial to ensure they are free from insect infestation, as bugs are not kosher. Fresh, dried, or frozen mushrooms without any questionable ingredients are generally permissible. However, canned or pre-cooked mushrooms require kosher certification due to potential cross-contamination with non-kosher products during processing.
The kosher status of mushrooms has been a topic of discussion within the Jewish community. While some communities avoided mushrooms due to warnings about their poisonous nature, others embraced them as a valuable ingredient, particularly in Ashkenazi cooking. Today, mushrooms are considered a gourmet ingredient, elevating the culinary experience.
In conclusion, the blessing for mushrooms, "by whose word all things came to be", reflects the understanding that mushrooms, as fungi, are distinct from plants in their source of nourishment. This blessing is recited before consuming mushrooms to express gratitude for God's provision and to acknowledge the unique nature of this food source.
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Dried mushrooms must be cooked before eating
Dried mushrooms are kosher, as long as they are free from bugs and have no questionable ingredients. However, it is important to note that dried mushrooms must be cooked before eating. This is because mushrooms contain chitin, a substance found in the cell walls of fungi that is indigestible to humans. Cooking breaks down the chitin, making the mushrooms safe to consume.
While some mushrooms, like button, oyster, padi straw, and shiitake mushrooms, are commonly eaten raw, it is generally recommended to cook all mushrooms before consumption. This is because, in addition to the indigestible chitin, some mushrooms contain heat-labile toxins that can be harmful if consumed raw. Cooking helps to break down these toxins, making the mushrooms safer to eat.
It is worth noting that even after cooking, some mushrooms can still be toxic. Therefore, it is important to properly identify and prepare mushrooms before consuming them. In addition, when purchasing canned or pre-cooked mushrooms, it is important to look for kosher certification to ensure that they have not been contaminated by non-kosher products or processed on equipment that has also handled non-kosher food.
In terms of blessings, since mushrooms do not grow from the ground like plants, the blessing typically said for plant-based foods, "Blessed are you... the Creator of the fruit of the earth," does not apply. Instead, the blessing said for meat and other non-plant-based foods, "That all came to be from His word," is recited before eating mushrooms.
In conclusion, while dried mushrooms are kosher, it is important to cook them before consuming them to ensure they are safe to eat. Additionally, as with all mushrooms, it is essential to properly identify and prepare them, and to check for kosher certification when purchasing canned or pre-cooked varieties.
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Dried mushrooms are kosher if dehydrated, killing any bugs
Dried mushrooms are kosher, as long as they are dehydrated and free of bugs. Mushrooms are fungi, and in general, natural fungi are kosher. The Torah specifies which foods are forbidden, and anything not explicitly forbidden is permitted.
However, it is important to ensure that dried mushrooms are not infested with insects, as bugs are not kosher. Before consuming dried mushrooms, it is recommended to rinse them and check for any signs of insect infestation. This is a crucial step to ensure the mushrooms are kosher.
Canned or pre-cooked mushrooms require kosher certification because they may be processed using non-kosher equipment or ingredients. It is important to look for a symbol of kosher certification on the label to ensure that canned mushrooms are kosher.
Additionally, some varieties of mushrooms, such as cordyceps, may not be considered kosher due to their parasitic nature. Cordyceps mushrooms take over the bodies of caterpillars, worms, or insects, which could make them non-kosher. However, if cordyceps are lab-grown and use grains instead of insects, they may be considered kosher.
It is worth noting that the blessing recited before eating mushrooms is different from the blessing for plant-based foods. Since mushrooms do not grow from the ground like plants, the appropriate blessing is the same as that said for meat and other non-plant-based foods: "That all came to being from His word" ("she'hakol ni'hi'ye bidvaro").
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Frequently asked questions
Yes, dried mushrooms are kosher as long as they are free of bugs and have no questionable ingredients.
Some health officials caution that all mushrooms, including button mushrooms, must be cooked before eating to render them digestible. This is because the cell walls of fungi contain chitin, which is indigestible.
Since mushrooms do not grow from the ground, the blessing said on most plant foods, "Blessed are You... the Creator of the fruit of the earth", is not recited. Instead, we say the same blessing said on meat and other non-plant-based foods: "That all came to be from His word".

























