Grind seafood. By hand, mince cilantro, thinly slice green onions, and chop water chestnuts. Combine seafood, ginger, cilantro, green onions and water chestnuts with remaining ingredients and mix well.
Cook a little of this mixture and taste and adjust seasonings to taste.
Make potstickers using 1 tablespoon filling and fold in half and brush with beaten egg and press together. Repeat this step until done.
Boil approximately 10 minutes and pour into a colander to drain and run cold water over the potstickers to cool and place a large nonstick skillet and light oil and then pan fry in batches to a golden brown.