1 pound fresh green beans, 1" pieces, steamed until tender & cooled
1 15-16oz can garbanzos
1 15-16oz can kidney beans
1 large red onion, coarsley chopped
1/2 cup seasoned rice vinegar

Combine all ingredients in a sealed plastic container and shake well.
Let sit in fridge overnight, gets better with age, up to 10 days in the
fridge.