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That's a big one. Better look for some shrooms out in the forest to go with it.

I live in mushroom central but unless I had an expert in the field with me I wouldn't attempt to use them as food:

more shrooms.jpg

Those look like ink caps to me, technically edible but only good in soup and if you drink any alcohol too soon after eating those it will mix with an enzyme in them that will make you sick. I would only eat those if you were really desperate for food.