Morus rubra L.  Unripe berries of red mulberry.  Favorite food of birds.  Avoid eating berries from roadside trees because of auto pollution and pollution from aerial spraying at edges of field.  For more see Mulberry

Try mulberries with cool whip.

Mulberry and raspberry float.   Whipped cream layer, then raspberries and mulberries, more cream, more fruit, top it off with cream and a berry.  Then what?  Duh!