Make your simple syrup by heating sugar and water over a medium heat on the stove. Stir until the sugar dissolves and the liquid is clear. Remove from the heat and let cool for a couple of minutes until just warm.

In a large plastic jug or glass container add the simple syrup, vodka, brandy hazelnut syrup, glycerin and vanilla extract. Stir vigorously until well combined.

Close the lid on the container and store in a cool dark place for one month or longer.

Bottle as gifts or serve as a cordial, on the rocks or in a mixed drink. Enjoy.