Congealed Tuna Salad 1 small box lemon gelatin 3/4 cup hot water 2 cups white tuna, flaked 1 teaspoon salt 1 tablespoon onion juice 1/2 cup mayonnaise 1 (2 ounce) can chopped pimento 1 cup diced celery 1 cup chopped pecans Dissolve gelatin in 3/4 cup hot water. Add remaining ingredients and mix; pour into an 8-inch square dish. Congeal in refrigerator. Cut into squares and serve on lettuce leaf.