Drain the tuna and add it to a mixing bowl together with the dried cranberries, celery, red onion, light mayo, Dijon mustard, lemon juice, fresh parsley, salt and black pepper.
2 cans (5 oz. / 140 g) tuna
¼ cup dried cranberries
¼ cup celery
¼ cup red onion
½ cup light mayo
1 teaspoon Dijon mustard
1 tablespoon lemon juice
¼ cup fresh parsley
½ teaspoon salt
¼ teaspoon freshly ground black pepper