Peel and wash pearl onion.

In a glass jar put vinegar and water. Add salt, sugar, cardamom, cinnamon, clove, green chilli, beet.

Give it a quick mix.

Then add onion into the jar. And mix it well.

Keep it in fridge for atleast 12 hours and use it. U can use this for 10 to 15 days.

Now your vinegar onion is ready to eat.