Chicken with Peppers and Cashews

Name: Chicken with Peppers and Cashews
Cuisine: Hong Kong
Ingredients: 6 ounces chicken breast, cut into ½ inch dice; 1 tablespoon cornflour; 1 teaspoon salt; ½ teaspoon sugar; 1 egg white; 1 tablespoon hoisin sauce; Oil for frying; 4 ounces cashew nuts; ½ inch ginger, sliced; 3 spring onions in 2 inch lengths; ½ green and ½ red pepper, chopped