>>214644411
Nigga you dont need that for chestnuts, it's nit like shrooms which can look similar to other shrooms at different stages of development.
Picrel are edible chestnuts, the outer shell is spiky and can actually hurt you, the chestnuts have a flat side and a small tuft, they also have brighter colors, they just look better.
Also usually you never find non-edible chestnuts near edible ones.
But anyway you wont die if you pick the wrong ones, because they will be so shit tasting and sour/acid you wont be able to eat them