1. The oil is well rubbed with boiled egg. Season with salt, add the lemon juice. 2. Herring fillets finely chopped. Pickled onions also cut finely. 3. The greens of leaves and mix. 4. On plastic wrap sprinkled the green square, the green herring and onions. 5. Then put the butter and gently dub. Using film roll and fold in holodilnichek, let harden. Oil need to take a good, since more would crumble. Bon appetit.