Reduce to a low simmer for 1.5 hours (this will reduce by about half)
After the 1.5 hour simmer allow the liquid to cool completely
Once completely cooled add in vodka and vanilla
Stir
Bottle (make sure you sterilize your bottles and lids)
Recipe Notes
Label and decorate to your liking. Enjoy a little glass of the leftovers over ice with cream. This recipe will make about 45 oz of coffee liqueur. Very easy to double or triple, as needed, for gifts.