Add cream, condensed milk, chocolate syrup, espresso and vanilla extract to the Thermomix bowl. Mix for 20 seconds / speed 2.
Place a jug on top of the Thermomix bowl and weigh in the whiskey.
Set the Thermomix to 20 seconds / speed 2 and slowly pour in the whiskey through the hole in the lid to combine.
Pour into sterilised bottles with a good seal and refrigerate until needed.
