Tuna Apple Salad
["1 (7 oz.) can tuna, water packed", "1 unpeeled diced apple", "1 stalk celery, chopped", "2 Tbsp. mayonnaise", "1 Tbsp. lemon juice", "lettuce, as desired"]
["Rinse and drain tuna.", "Mix tuna and other ingredients, except lettuce, in bowl.", "Use immediately or chill 1 to 2 hours.", "Serve on a bed of lettuce leaves."]
["tuna", "apple", "celery", "mayonnaise", "lemon juice"]