Select fine lemons, wipe carefully, scoop out the pulp, remove the tough inner skin and seeds, and to the rest add one box of boneless sardines, finely chopped, one teaspoon of French mustard, two hard-boiled eggs chopped, some tabasco sauce, and mayonnaise. Fill each cup with the mixture. Cut a small slice from the bottom of the lemon, so that it will stand firmly. Garnish with chopped egg and chopped parsley, and serve on lettuce leaves.