You will need following ingredients:
24 Onion Shallots
2 tsp Mustard Seeds Powder
6-7 tbsp. Mustard Oil
2 tbsp. Vinegar
2 tsp Salt
2 tsp Turmeric Powder
2 tsp Red Chili powder
16-18 tbsp. Water

Follow the below steps to make tasty Onion Pickle:
1. Peel off the outer layer of onion shallots.
2. Wash the onion shallots and put it in a glass jar.
3. Add all the ingredients in the same glass jar and mix them all well.
4. Keep it for a day in the direct sunlight.
5. Onion Pickle is ready to be served along with lunch/dinner.