1 (6 ounce) can tuna in water, drained |
1 stalk celery, coarsely chopped (1/2 cup) |
2 medium green onions, sliced (1/4 cup) |
1 small apple, coarsely chopped (1/4 cup) |
1/2 cup fat-free lemon yogurt |
1/8 teaspoon coarsely ground pepper |
4 8-inch fat-free flour tortillas (6 or 7 inches in diameter) |
1 leaf lettuce |
thin slices red onion |