In a medium bowl combine tuna, celery, onion, and sweet pickle. For dressing, in a small bowl stir together mayonnaise, lemon juice, and dill. Add to tuna mixture; toss to coat. Cover and chill for 1 to 24 hours before serving. Serve as sandwich filling or on mixed greens. Makes 4 servings.
Adding olives can make tuna or salmon salad more interesting, as can sliced avocado or chopped hard-boiled egg. A slice of tomato on top of the tuna salad followed by a slice of cheese makes a great open-faced sandwich when broiled lightly to melt the cheese. You can also squeeze a fresh lemon over your salmon salad right before serving for added garnish and flavor, and use fresh ground pepper to complete the dish.