They are not REALLY poison. The thorns of the bush will cause a rash, but the berries are edible for birds and people

You might need to buy:
  • powdered pectin
  • juice of 1 grapefruit
  • juice of 1 lemon
You might need to buy:
  • lemons
  • coarsely chopped walnuts
  • port
You might need to buy:
  • chopped prickly pears
  • sliced lemon
  • oranges
  • more cups sugar
You might need to buy:
  • dried peaches
  • dried apricots
  • prunes
  • oranges
  • chopped walnuts
You might need to buy:
  • dried peaches
  • dried apricots
  • prunes
  • orange
  • seedless raisins
  • nut meats
You might need to buy:
  • shredded fresh pineapple
  • sliced rhubarb
  • oranges
  • blanched almonds