YIELD: 4 to 6 servings | PREP TIME: 15 minutes | CHILLING TIME: 2 hours • ¼ cup minced Vidalia onions • ¼ cup boiling water • 3 tablespoons red wine vinegar • 1 (3-pound) seedless watermelon • 1 English cucumber (about ¾ pound), peeled • 1 jalapeño pepper, seeded and...
