Boil the water and put the salt and butter in it. Gradually add flour and stir with a wooden spoon to make a smooth dough and to the point where the mixture begins to unstick from the dish.
Remove it from the heat, cool slightly and put the eggs in, one at a time. Continue stirring in order to make a smooth homogeneous mixture.
Remove the tulumbas with a slotted spoon. When ready, pour the cold syrup on top.