Stir the sugar,salt and warm milk,yeast and let stand for a few minutes until the sugar melt.

In a medium bowl,add flour and butter.beat the egg and vanilla until it blended.add the mixed sugar and make a dough.

Roll dough out on a floured surface to 1/3 inch thickness.cut into doughnuts using doughnuts cutter let stand until rise.

Heat the oil in a large deep fry. Fry the doughnuts in the hot oil until in turns into golden.