Whisk the eggs with 50ml/2fl oz water and set aside. Mix the breadcrumbs, garlic salt and mixed spice together, and set aside. Blend the flour with the cornflour.
Heat enough vegetable oil for deep-frying in a heavy saucepan. Dredge the cheese sticks in the flour mixture, then dip in the egg. Lastly, coat in the breadcrumb mixture.
Lower carefully into the hot oil, and fry for a few seconds until golden. Remove from the hot oil, and drain on kitchen paper. Serve hot.