Grind ginger, garlic, onion, pepper and cloves together to a fine paste. (use some of the vinegar for grinding if needed)
Heat Â¼ of the oil and cook mango slices for 10 minutes.
Add chili powder, and salt.
Cook for another 15 minutes.
Add the ground paste, remaining oil and vinegar.
Cook on slow fire for 10 minutes.
Cool and store in jars. It is ready to use.
Will keep well for 6 months or longer in frig.