Begin by cutting the mozzarella cheese into sticks, approximately 1-inch wide. Lay them on a baking sheet lined with parchment paper and freeze for about 30 minutes.
In three separate shallow dishes, prepare the flour, cornstarch, and breadcrumbs.
Dredge each stick in the flour mixture first, then dip into the milk, and finally roll them in the seasoned breadcrumbs.
Heat vegetable oil to 350°F (175°C) in your deep fryer or pot.
Carefully lower the breaded mozzarella sticks into the hot oil and fry for about 2-3 minutes or until golden brown.
Serve your homemade mozzarella sticks hot with your favorite dipping sauce.