Put flour and salt in a bowl and stir together.

Melt the butter in e.g., the microwave.

Add beer, water, vodka, and melted butter to the bowl with flour and salt. Mix well until there are no more lumps in the dough.

Place the dough in the fridge for at least 1 hour before using it.

Beat the egg whites until stiff and fold the stiffly beaten egg whites into the dough just before using it.

The dough is now ready to use.