If you have half a red onion in your kitchen, don’t let it go to waste and instead prepare it in vinegar to accompany your cochinita tacos, panuchos, carnitas, and much more. The best part? These red onions in vinegar will be ready in just 15 minutes.Did you know? The red onion is a very healthy ingredient, as it is an excellent source of antioxidants, potassium, fiber, and vitamin B6.See more easy recipes