Prepare the bottle and the ingredients. You can use an empty bottle or container with a lid. Just make sure that the bottle is washed and dried before using it.
Add the prepared ingredients to the bottle. The ingredients should be small enough to get through the mouth of the bottle.
After all the ingredients are inside the bottle, fill the bottle with vinegar.
Let the spiced vinegar sit on the shelf for at least a week before using it.
Notes
If you want a milder version, only add a small number of chilies. You can also add more chilies if you prefer a very spicy vinegar.
If the bottle becomes empty, fill it with more vinegar.
Add more spices when the spices are not giving any more aroma and flavor, usually after 2-3 refills of vinegar.
Store the spiced vinegar bottle in an airtight container and leave it on the shelf until ready to use.