Ingredients

• 1 large cucumber, peeled and cut into chunks
• 2 small cucumbers, peeled leaving stripes of skin and sliced
• 1 large heirloom tomato, seeded and diced
• 1/3 small onion, finely chopped
• 1/4 cup champagne vinegar
• 1 tablespoon balsamic vinegar
• 1 tablespoon extra-virgin olive oil
• 2 teaspoons agave nectar, or more to taste
• 1 pinch sea salt, or to taste
• freshly ground black pepper to taste