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.