Add 6 ounces of pitted cherries to a 12 ounce mason jar. The jar should be thoroughly cleaned and the cherries should fit comfortably. Don’t pack 'em in.
Fresh cherries will keep up to 10 days in the fridge and 6 months if frozen. Removing the stems and pits is suggested before freezing but not required.
Bring the maraschino liquid to a simmer and then turn off the heat. Pour the maraschino liquid into the jar with the cherries. Stir and let cool and refrigerate.
The maraschino cherries should keep for up to 6 months if not longer. Check them regularly for signs of mold. The cherries are great in cocktails or on sundaes. That cherry-infused liqueur is great in a cocktail, so don’t toss it! Mix it in.