While the jars are sterilizing, peel and slice the mangoes.
Next, combine vinegar, water, and oil in a small saucepan. Add the chiles, garlic, and spices. Bring to a boil then remove this brining solution from the heat.
Place mango slices, chilis, and garlic into the sterilized jars.
Pour the brine over the mangoes and hand tighten the lids.
Process the jars for ten minutes in the boiling water. Store the jars in a pantry for at least a week to allow the flavors to come together. Shake the jar every now and then to redistribute the spices. Once open, refrigerate the jars for up to six months.
Notes
Shake the jar every now and then to redistribute the spices.
If you like more spice, add crushed red pepper flakes to the brine.