From slices of bread cut out 4 circles from the middle. Upper and lower tip of the hard-boiled eggs are cut, carve be yolks with a spoon and pressed. The butter mix until blanching, add pressed yolks, sardines, salt, pepper and mix well. Eggs were filled with the thus obtained mixture and the rest of it are coated and rolls thereon is placed in an egg 1. Decorate with thinly sliced ​​rings of gherkins.