Nutrition per serving may change if servings are adjusted.
1/2 cup diced red onion
1/3 cup reduced-fat mayonnaise
1/4 teaspoon kosher salt
Freshly ground pepper to taste
2 6-ounce cans chunk light tuna in olive oil, drained (see Note)
2 stalks celery, thinly sliced (about 1 cup)
1/4 cup packed coarsely chopped fresh tarragon leaves
8 cups torn lettuce, or mixed greens
1 pound small ripe tomatoes, cut into wedges
1 lemon, cut into 8 wedges
Place onion in a small bowl and cover with cold water. Refrigerate for 20 minutes. Drain.
Whisk mayonnaise, salt and pepper in a medium bowl. Add tuna, celery, tarragon and onion; stir to combine. Serve on top of the lettuce (or mixed greens) with tomato and lemon wedges.
Make Ahead Tip: Store in an airtight container in the refrigerator for up to 1 day.
Note: Chunk light tuna, which comes from the smaller skipjack or yellowfin, has less mercury than canned white albacore tuna. The FDA/EPA advises that women who are or might become pregnant, nursing mothers and young children consume no more than 6 ounces of albacore a week; up to 12 ounces of canned light tuna is considered safe.