My Favorite Tuna Sandwich Recipe

Name: My Favorite Tuna Sandwich Recipe
Prep time: 10 min
Total time: 10 min
Cuisine: American
Ingredients: 1/2 cup celery (finely chopped); 2 5 ounces can tuna in water (drained); 4 small cornichons, gerkins (finely chopped); 2 teaspoons whole grain mustard; 1/4 cup light mayonnaise; 1/4 teaspoon turmeric; salt and pepper to taste; whole wheat pita bread or whole grain sandwich bread; avocado slices; tomato slices