Remove head and big bone (use only part of the eel’s back). Cut into pieces 1-½ inch long, marinate in 1 tablespoon soy sauce and 1 tablespoon cornstarch.
Cut green and red peppers into diamond-shapes.
Heat 2 cups oil, and deep-fry eels for 20 seconds. Add green peppers and deep-fry together for another 5 seconds. Remove all and drain dry.