When making pasta filata (mozzarella, provolone), gloves protect your hands from hot cheese. Stretching pasta filata requires handling very hot curd, stretching it between your hands. Gloves keep your hands protected while giving you the ability to handle curd at ideal stretching temperatures. Gloves are also important for keeping your cheese sanitary. Handling cheese with sanitized gloves prevents your cheese from coming into contact with dirty hands, introduce contaminants and affect flavor and texture.