Sprinkle gelatine on the cold water to soften. Stir the softened gelatine into the very hot water until thoroughly dissolved. Add vinegar and salt.
Chill to unbeaten egg white consistency. Fold in vegetables and fish carefully.
Turn into one large mold (3-4 cup) or 6 small molds. Chill until firm.
Yield: Serves 6.
Use 1¼ cups flaked salmon; 1¼ cups whole shrimp plus 1 tbsp mayonnaise; 1¼ cups flaked tuna fish -reduce the vinegar to 2 tbsp and salt to ¼ tsp. Use any one of the above in place of cooked lean fish in the recipe.