For the crispiest texture and to minimize cheese leakage, make sure the coated mozzarella sticks are fully frozen before they go into the hot oil. If any sticks start to soften while you are frying batches, return them to the freezer until they are firm again. You can prepare a double batch, freeze them on a baking sheet until solid, then transfer the frozen sticks to a freezer safe bag or container for up to one month, cooking straight from frozen whenever you want a quick snack. To reduce oil splatter and keep carbs low, avoid using cheese sticks made with added starches or fillers and choose whole milk, low moisture mozzarella whenever possible.