Put half a pound of flour into a basin. Make a hollow in the centre, and drop into it one egg yolk, half a teaspoonful of sweet oil, a tablespoonful of brandy, and a light saltspoon-ful of salt. Mix all the ingredients, except the flour, for three minutes, using the hand. Then gradually knead in the flour, meanwhile dropping in, little by little, one gill of cold water. Mix well, moving in the same direction for five minutes. Then put it into a vessel, cover with a cloth, and set aside to rest for three or four hours. When ready to use, beat the whites of three eggs to a froth with a pastry-whip, add it to the batter, and mix together thoroughly with the spatula for two minutes. It will now be ready for use, but should it not all be required, it will keep in a cool place.