Combine all the ingredients together and add water in small portions until you achieve the right consistency. You'll have to melt the coconut oil for this step. The coconut balls need to rest in the fridge for at least 10 minutes before moving on to the next step.
Once the coconut balls are ready and settled, you just have to drizzle some melted chocolate on top of them. You could also add some little decorations on the outside before the chocolate solidifies. When you melt the chocolate, mix the butter to the pieces of chocolate; add 1 tablespoon of milk if needed.
The truffles need to rest in the fridge for at least 10 minutes before serving. You can store them in the fridge in a closed container for up to 2 days.