While marinated onions typically include sugar, these have no sugar at all and are a healthy way to add some tangy flavor to lots of dishes. Enjoy these marinated onions on burgers, in tuna salad, in tacos, or as a salad topper. Keep a batch of these on hand at all times; you’ll be glad you have them!
In a medium-sized mixing bowl, mix together the vinegar, salt, and spices. Add the onions, stir to coat well, cover, and marinate overnight in the refrigerator.
The onions will keep in an airtight container in the refrigerator for 1 to 2 weeks.