1/2 cup cooked white rice, 1/4 cup chopped cucumbers, 1/4 cup chopped red bell peppers, 1/4 cup chopped tomatoes, 1 large egg, 1 tablespoon vegetable oil, 1 teaspoon soy sauce, 1/2 teaspoon sesame oil, 1/4 teaspoon garlic powder, 1/8 teaspoon white pepper