Break apart the garlic heads and peel the cloves. Rinse the peeled cloves thoroughly in water and drain.

Trim any brown spots from the garlic cloves with a small paring knife. Rinse again if necessary.

Bring the vinegar and water to a boil in a large pot. Pack the prepared garlic cloves into small sterilized jars.

Pour the hot vinegar solution over the garlic in each jar, leaving some headspace. Seal the jars tightly.

Allow the jars to come to room temperature and then refrigerate overnight. Store in the refrigerator for up to one year.