from The New Joys of Jell-O (General Foods Corp 1973)
Today's retro recipe comes with this handy tip:
Empty cans cane make easy molds for gelatin relishes or frozen salads.
MOLDED TOMATO RELISH
1 Can (16 oz) Stewed tomatoes
1 package (3 oz) Jell_O Lemon or Strawberry Gelatin
1/2 teaspoon salt
1 tablespoon vinegar
Our tomatoes into saucepan, saving can to use as a mold. Bring tomatoes to a boil. Reduce heat and simmer 2 minutes.
Add gelatin, salt, and vinegar; stir until gelatin is dissolved.
Pour into can. Chill until firm - about 4 hours. Then dip can in warm water, puncture bottom of can and unmold.
Makes about 2 cups or 6 servings.