1/2 block of firm tofu, 1 tablespoon soy sauce, 1 tablespoon cornstarch, 2 tablespoons vegetable oil, 2 cloves garlic (minced), 1 tablespoon ginger (minced), 1 red bell pepper (sliced), 1 small carrot (julienned), 1/2 cup snap peas, 2 tablespoons Sichuan sauce, green onions (sliced) for garnish