Boil water and sugar until dissolved.

Turn off heat.

Slowly add dry instant coffee and continue stirring.

Add a chopped vanilla bean to the vodka, then combine the cooled sugar syrup and coffee solution with the vodka.

Cover tightly and shake vigorously each day for 3 weeks.

Strain and filter.

Its also best to let the sugar mixture cool completely so the vodka won't evaporate when its added.

If you like a smoother feel to the liqueur you can add about 1 teaspoon of glycerine to the finished product.