This fresh, tangy cucumber salsa is perfect for grilled fish or on its own as a simple side salad. Well balanced and easy to make, the flavor mellows and the cucumber softens as this sits, so it can easily be made a day or two ahead of time--or enjoy it right away, fresh and crisp.
Combine cucumber, honeydew, cilantro, onion and jalapeño in a large bowl. Add lime zest and juice, vinegar, sugar and salt. Stir well and serve.