Paw paw. Asimina triloba L. Dunal.  has long been used as food among First People. Exciting work by Jerry McLaughlin at Purdue University may yield a potent anti-cancer chemical from the leaves and stems of the plant. (More)

If the fruit is picked unripe, seal in a paper grocery bag, place in a cool area and check every few days.

Native American Food uses:  Cherokee and Iroquois ate the fruit.  Fruit may be smashed and dried into small cakes for winter use... See salmon berry
Large seed of paw paw.  Substantial foodstuff, sweet custard like texture.