These will keep in the fridge for a week. This recipe scales up easily.
- 1spanish onion, peeled and cut into slim half moons
- 1 fat pinch of salt
- 2 tsp. sugar (optional)
- 2 tbsp. apple cider vinegar or red wine vinegar
- Add the salt (and sugar, if using) to the onions and scrunch them with your fingers to mix and soften.
- Pour in the vinegar and stir to combine. Allow to steep for at least 30 minutes (but you can prepare up to a week ahead). The onions will turn a deep shade of pink.