@mangochops In the Scottish case it baffles me- why on earth take the chance?- you can buy mushrooms from most shops and they even said they didnt even taste nice anyway. I just dont understand why anyone would take such a stupid risk.
Well ... it can feel good to harvest your food direct from the land while you're out and about, and it's a great experience for children, teaching them how it all began. Mushrooms, berries, large fruits, nuts, leaves, roots, flowers, seaweeds, and more. Lots of things are edible, lots are inedible, unpleasant tasting or need further processing, a relative few are dangerous. You do have to know what you're doing though.
I remember picking samphire straight into my egg sandwich, guddling for fish with my Grandad, and once taking home an eel (which did not impress Grannie as much as we felt it should :). Berries were always picked wild, also apples and rhubarb. Nettles, sorrel, wild garlic. My step-father was a Professor of Botany, specialising in fungi, so I spent a lot of teenage weekends tramping though wet woodlands foraging for a veritable smörgåsbord of mushroom varieties to throw in the pan later.