- 1/2 cup apple cider vinegar
- 1 cup water
- 1 tbs sugar
- 1 1/2 tsp kosher salt
- 1 red onion, very thinly sliced
- Mix vinegar, water, sugar and salt until dry ingredients are fully dissolved.
- Slice onion on mandolin for very best “thin” results
- Place onions in a jar, pour liquid in and full cover and seal with lid.
- Let sit at room temperature for 1 hour. Can be made 2 weeks ahead. Cover and chill. Drain onions before using.