How to cook "cat’s language"
Warm the butter a little in order to soften but not to melt. Whisk with vanilla , then add the sugar and mix for five minutes. Gradually add the whipped albumen on the mass. Add sour cream then flour. Mix until there is no nubbins. Pour into a receptacle or syringe and put dough into the oiled frying pan. They should be a finger thick cookies. As while baking the dough spreads we should leave enough space in widths. Bake in a very hot oven for 5 minutes and keep in airtight lockable pot.