Ingredients 4 sun-dried tomato plants 1/4 red onion, minced 1 (12-ounce) can solid white-colored albacore tuna in water, drained 1 rib celery, chopped 1/4 cup pitted nicoise olives 1 tablespoon capers, rinsed two tablespoons extra-virgin essential olive oil 1 teaspoon finely grated lemon zest