Vadu Mango Pickle (Vadu Mangai Urugai or Maavadu) is a South Indian style baby mango pickle that requires no chopping and no cooking. Here is a traditional recipe to make it.
Remove the stems from 500 of g baby mangoes and wash them well in running water. Wipe them with a kitchen towel and spread them on a kitchen towel for a few hours so that they get rid of any moisture.
Dry roast 15-20 whole dry red chilies (stalks removed), 1 tablespoon mustard seeds, and ½ teaspoon fenugreek seeds on medium heat until slightly browned (1-2 minutes).
Add them to the medium jar of a blender along with ¼ cup boiled and cooled water and 2 tablespoon rock salt.
Blend to make a smooth paste.
Transfer the mangoes to a clean and completely dry non-reactive bowl. Pour 1 tablespoon castor oil over them and mix well.
Add the spice paste along with ¼ teaspoon turmeric powder and ¼ teaspoon asafoetida to the bowl and coat the mangoes well with it.
Transfer the mangoes to a glass jar and cover with a loose-fitting lid. Keep the jar in the sun for 10-15 days until the mangoes shrink and the pickle is ready to eat. Keep tossing the pickle twice a day every day until the pickle is ready.
Notes
Use very small baby mangoes only to make this pickle. Use a clean dry spoon to toss the pickle and make sure to do it twice daily.