Combine water, sugar, and coffee in a saucepan and bring to a full boil. Skim off the froth and allow to cool thoroughly. Pour into the container. Add vodka, coffee beans (optional but will add a fuller flavor), and vanilla bean. Store in a dark place for 3 weeks. Strain and filter. Ready to serve.
Notes:
*A brandy/vodka mix may be substituted for a simulated "Kahula"*A rum/vodka mix may be used to simulate "Tia Maria"
Container: half gallon jar