I remember when mushroom picking my parents always told me that if you go with ones that have sponge underneath you are safe. Ones that have little "dividers" are dangerous. Except for one orange mashroom that had them and was considered a treat. That's when the taste method was used and if you cut the mushroom in half, touched the inside of the flesh with your tounge and it stung than it was the poisonous one. My parents used that method all their life and so did I for the time I was in Poland and it seemed to work fine.