Start by separating the yolk from Clara. Beat the egg white and add the sugar and margarine mix well.
In a bowl, place the wheat flour and add the Clara, gradually add the milk and the lemon juice, add the yeast and mix well.
Place the dough on a greased tray and bake for 30 to 35 minutes.
Mix condensed milk, cream or milk, butter and powdered milk over low heat until it becomes a syrup.
If you prefer, sprinkle powdered milk on top of the cake.