Dissolve sugar and butter in warm water and allow to cool. Stir in the remaining ingredients and let stand a little. Add water if necessary.
Put very thinly (1 tablespoon) in the cake iron (croissant machine), bake until golden brown, lift off with a fork and immediately roll into a small funnel. If the flour swells and the dough becomes firmer during the lengthy baking process, add more water.
It is best to stack the waffles one inside the other and serve them filled with cream.