Break apart your heads of garlic and peel the cloves. Fill a large bowl with water and scrub the cloves with your fingertips. Drain and rinse well using a strainer.

Trim any brown spots from the garlic cloves with a small paring knife and rinse again to clean.

Bring the vinegar to a boil in a large pot. Place the peeled garlic cloves into small sterilized jars and pour the boiling vinegar over them. Seal the jars tightly.

Allow the jars to cool to room temperature overnight, then store in the refrigerator for up to a year.