Why are mushrooms dried out before being used in puff pastry?
Recipie items like fresh mushrooms and spinach have very high moisture contents that cook out early in the process and will put holes in your puff pastry if they are cooked together. In order to get around this problem you can either use dried mushrooms or pre-cook the mushrooms before adding them to your recipe. The latter is usually preferable because of the texture and flavor of dried vs. fresh mushrooms, but sometimes it’s not possible to use pre-cooked fresh mushrooms and dried ones are required.
