In a small bowl, place the onion slices. Pour over the vinegar.
1 onion, β cup white wine vinegar, salt, black pepper
Season to taste with salt and pepper. Allow to sit to allow the onion to marinade. This also removes some of the bitterness and heat from the onions.
Refrigerate until ready to serve. Use within 4 days.
Notes
Promptly store leftovers in an airtight container in the refrigerator, for up to 4 days.Nutritional values are approximate and based on ΒΌ the ingredients.The flavor will vary depending on the type of onion and vinegar you choose. For sweeter onions, add a pinch of salt. For spicy onions, add red chili flakes.