Pineapple Salad with Walnuts Recipe

Ingredients (7)

• 1 20-ounce can pineapple chunks, drained
• 2 cups celery, sliced
• 1/2 cup walnuts, coarsely chopped 
• 1 to 2 tablespoons mayonnaise, or to taste
• 1 tablespoon fresh lemon juice
• 1 pinch salt, or to taste
• 1 head lettuce, iceberg or butterhead; washed and leaves separated