SARDINE IN EGG CUPS

Cut hard-boiled eggs in halves crosswise and take out the yolks. Cut a thin slice off the bottom of each cup. Rub the yolks to a smooth paste with olive-oil and add half a dozen sardines skinned, boned, and mashed. Season with salt, pepper, mustard and lemon-juice, fill the egg cups, and serve on lettuce leaves with French or Mayonnaise dressing.