Field Mushrooms , Giant puffballs , Boletes . Blackberries , rose hips , dandelion, elderberry wine , juice and jelly , elder flower cordial and wine , wild cherries , various sea weeds, nettles in beer and bread
The wild fruit trees you find near old houses / settlements are valuable genetic recourses as they are old fashioned breeds ,and may be no longer commercially available and they posses a natural resistance to disease and insects having survived a hundred or more years with out spray or fertilizer. They are worth marking on your GPS or map and collecting scions when the time is ripe .