Tuna Salad with Balsamic Vinegar and Grapes

Ingredients

• 2 (6-ounce) cans solid white tuna in water
• 2 tablespoons balsamic vinegar
• 1/2 teaspoon table salt
• 1/4 teaspoon ground black pepper
• 1 small rib celery, minced (about 1/4 cup)
• 2 tablespoons minced red onion
• 6 ounces red seedless grapes, halved (about 1 cup)
• 1/4 cup slivered almonds, lightly toasted
• 2 tablespoons minced fresh thyme leaves
• 1/2 cup mayonnaise or reduced-fat mayonnaise
• 1/4 teaspoon Dijon mustard