How to cook Bitter-sweet onions:
- Red onions
- 1l white wine vinegar
- 1l water
- 200g sugar
- 200ml olive oil
- 10g salt
1. Peel an onion. Cut off both ends and remove a few layers from each onion.
2. Pour water into a pot, add sugar, and mix.
3. Add vinegar and bring to a boil. Put all the onions in the water and cook for 5 minutes.
4. Remove the onions. Add oil and mix.
5. Place the onions in glass jars. Fill with liquid from the pot.