Classic Orange Beef

Name: Classic Orange Beef
Ingredients: 1/2 pound flank steak, thinly sliced across the grain and cut into 2-by-1/2-inch strips; 1 teaspoon baking soda; 1 large orange, zest removed in strips, 3 tablespoons of the juice squeezed; 3 tablespoons soy sauce; 3 tablespoons white vinegar; 2 tablespoons sake; 2 tablespoons sugar; 2 teaspoons plus 1/2 cup cornstarch; 1 large egg white; 2 cups peanut oil, for frying; 1 teaspoon kosher salt; 3 scallions, thinly sliced; 1 teaspoon Asian chili-garlic paste; 1 teaspoon toasted sesame oil