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I went out to look for any nettles but I only found these
(not my picture, it's from google)

I think think this is called an Archangel and it's white fruit (look at the pic) tastes really good if you suck the juice out of it.

I didn't try but I don't know if it's good to eat that plants leaves aswell.
Maybe you know :D

Anyways tomorrow I will go look for some real nettles and try to eat them like you did.