Drain and flake salmon. Add salt, pepper, 1/4 cup Manischewitz Matzo Meal, onion, and 2 beaten eggs. Mix well; shape into 6 croquettes. Beat third egg with the water. Dip croquettes in egg mixture, then in the 1/2 cup of matzo meal. Fry in one inch of hot fat until browned on both sides. Serve with heated Manischewitz Tomato and Mushroom Sauce. Serves 3 or 4.