Pickled Onions

Bon Appetit, May 2011

Yield:  1 cup

1 medium red onion, thinly sliced (about 1 cup)

1/4 cup red wine vinegar or apple cider vinegar

1/2 tsp. sugar

Kosher salt

Place onion slices in a medium bowl.  Pour vinegar and 1/2 cup warm water over onion.l  Stir in sugar and season with salt; let stand until slightly pickled, about 30 minutes.  Drain.

Can be made 2 days ahead.  Let cool slightly.  Cover and refrigerate.