Mix the flour, sugar, water and beer. Add the eggs, oil and a little salt. Mix until it has the consistency of a good crepes batter. Let it stand for 30 minutes before frying.
Heat the oil in a pot to 180°C (the oil should bubble when the wooden end of a match or wood toothpick is inserted). Heat the patty shell iron in the oil until it is uniformly hot, about 5-10 minutes. Let the oil drip free of the iron and then dip it in the batter until it reaches the edge of the tool.
Fry the patty shell in the oil until crisp and golden. Knock it off onto a sheet of paper towel to soak up excess oil.