Grind or grate the eggs fine, and allow them to cool.
Dissolve the gelatin in the water.
Place in a very small saucepan, and add the lemon juice.
Stir over low heat until the gelatin dissolves completely.
Place the eggs, salt, tabasco, onion, worcestershire sauce, and mayonnaise in a bowl.
Blend well, and then add the lemon and gelatin mixture.
Finally, very gently stir in the caviar.
Do not stir much because you will discolor the mixture.
Pour into a 1 quart mold, and refrigerate.
Unmold, and garnish with parsley.