[header] How to infuse vodka with coffee [title] Boil the water in a medium saucepan. [title] Lower the heat to medium and stir in the sugar, stirring with a wooden spoon until the sugar has dissolved. [title] Add the vanilla extract and boil for another 3 to 5 minutes. 
[step] This will help the syrup to thicken. [title] Set the saucepan aside and allow the syrup to cool.