STIR until gelatin thickens, about 5 minutes; REMOVE any unmelted cubes.
STIR in apple, celery and nuts.
Serve in lettuce-lined bowls accompanied by mayonnaise, if desired.
Per Serving (excluding unknown items): 300 Calories; 5g Fat (14.6% calories from fat); 7g Protein; 59g Carbohydrate; 1g Dietary Fiber; 0mg Cholesterol; 195mg Sodium. Exchanges: 0 Grain(Starch); 0 Lean Meat; 0 Vegetable; 0 Fruit; 1 Fat; 3 1/2 Other Carbohydrates.