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I just bought a pot of oyster mushrooms from the farmers market to grow and harvest at home. However, it just occurred to me the straw it is growing in may be wheat straw. Would mushrooms grown in wheat straw be safe to eat if they are cleaned well?

gluten-free since 04/30/12

IgA antibodies to gliadin, casein, soy, egg, corn, rice, nightshades, beef, chicken, tuna, and pork.

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The mushrooms will not directly absorb anything from the straw. Straw is the waste after the grain has been thrashed out, so there is minimal content even if the source is wheat. Clean your produce as per normal, and enjoy your fresh mushrooms. I eat mushrooms all the time, and never worry about gluten in them.


Diagnosis by biopsy of practically non-existent villi; gluten-free since July 2000. I was retested five years later and the biopsy was normal. You can beat this disease!

Type 1 (autoimmune) diabetes diagnosed in March 1986

Markham, Ontario (borders on Toronto)

Celiac.com - Celiac Disease Board Moderator since 2007

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