Heated the oven to 180C and in a saucepan water boils, salt and cow butter. And then pour the flour in it. Stirring the mixture with a wooden spoon to form a smooth dough. Then remove it from the heat and wait until they are cool. One by one and add eggs, such as stir it with a wooden spoon until they are overtaken by the dough. Finally add the grated parmesan. With lightly floured hands, shape dough balls the size of a walnut. Put them off from one another on a tray covered with baking paper. Appetizer bake about 30 minutes until golden and it was served chilled. * For 30-40