Red Wine Vinegar Pickled Onions

• Whisk together 2 cups warm water, red wine vinegar, sugar and salt until dissolved.
• Pack onion into 1-quart Mason jar; pour in vinegar mixture. Let stand at room temperature for 1 hour. Cover tightly and refrigerate for up to 1 month.

Tip: This is the ultimate condiment for sandwiches, burgers, grilled meats, salad, fish, tacos and grain bowls. The liquid can even be used to make marinades, vinaigrettes or cocktails, like a Bloody Mary.