Step by step
Prepare the batter by putting the milk in a bowl, adding the beer, brewer’s yeast, an egg and salt
Tips
It would be great, for the best results, if you could get hold of some buffalo mozzarella. And it’s better not to use fresh bread for sandwiches because it might fall apart; use stale bread instead.
Trivia
It is said that the recipe derives from the desire to use up mozzarella left over from previous meals.