PREPARATION
Beat egg white slightly. Wash and dry crabs, dip into egg white and then into cornmeal.
Drain and rinse beans under cold running water.
Cut mangoes and pineapple into small chunks and place in mixing bowl large enough to hold all the ingredients but the crabs.
Heat oil in a nonstick pan and saute crabs until they turn red and the crust turns golden brown on both sides; about 5 minutes, depending on size.
Mince jalapeno, coarsely grate ginger, and add both to fruit.
Stir in brown sugar, lime juice and beans.
Wash, dry and chop cilantro and stir in.
Arrange salsa on each of two dinner plates and top with crabs.