Make the dough: sift the flour and salt into a basin. Cream the yeast with the sugar and add the warm water and the melted fat. Mix to an elastic dough. Knead well until smooth, cover with a cloth, and set in a warm place to rise to double its size. Knead again until there are no large holes in the dough when cut.
Roll into small balls. Leave in a warm place to rise slightly. Drop into