Mix butter, sugar and salt together with a low enough speed to beat Union. Gradually put sugar into beaten butter with sugar, a little at all until the next beat cream until light butter made with sparkling white duplex, I then put the eggs into beaten butter bubble, combined with the individual. Before the second egg, the eggs must be sure that the first bubble egg with butter together well!? When you put an egg into a bubble, then both hit put a vanilla milk shake and lemon skin down to hit enough to be compatible.