Take a pan Put 2 cups of water, vinegar and kairi and heat up the water.
After that add salt, turmeric, and cook it until kairi gets soft.
Take a large size pan put mustard oil in it.
when it get hot then add red pepper, black seeds, rai dana, cumin, fenugreek seeds, fennel seeds, carom seeds, and remove it from the oil immediately.
Put this oil with all seeds in kairi. Mango pickle is ready.