Vanilla Simple Syrup

100 ml water 
100 ml granulated sugar 
1 tsp vanilla essence or 1 vanilla pod 

Add sugar, water and vanilla essence to a saucepan and bring to a simmer until all the sugar has dissolved. If you are using a vanilla pod, cut it open lengthwise, scrape all the vanilla seeds in to water and add in the emptied pod. 
Let it cool before filling in to a sterilised jar and keep refrigerated for up to three weeks.