Add all ingredients in a blender and mix at high speed for one minute.
Pour into a bottle and leave to cool in the fridge.
If you use coconut milk without emulsifier, you need another step before serving, since chilled coconut tends to separate from liquid and gets firm in flakes.
Shake the bottle very well and pour the liqueur in another clean serving bottle through a fine sieve.
The flakes will remain in the sieve, but the liqueur won’t lose its tender coconut flavor.