1. Mix the eggs and water in a small bowl.
2. Mix the breadcrumbs and the garlic salt in a medium bowl. In another medium bowl, blend the flour and cornstarch.
3. In a large heavy saucepan, heat the oil to 365 degrees Fahrenheit (185 degrees Celsius).
4. One at a time, coat each mozzarella stick in the flour mixture, then the egg mixture, and then in the breadcrumb mixture. Once you have done this, place in the oil and fry until golden brown, about 30 seconds. Remove from the heat and drain on some paper towels.