Combine the vinegar and chive blossoms in a glass jar.
Cover with a piece of parchment paper, instead of the metal top of the glass jar. The metal will react with the vinegar.
Keep in a dark, cool place for 2 weeks to 2 months to infuse the vinegar.
Remove the blossoms from the vinegar and strain the vinegar through a fine mesh sieve if there are any small pieces left behind.
Store in the refrigerator for up to 6 months or pantry for up to 2 months.