Chill a tin of coconut milk in the fridge overnight. It has to be good quality coconut milk with high fat content. Refrigerating it makes it split between the coconut fat and thin water at the bottom.
Scoop off the coconut fat into a mixing bowl. Beat with an electric whisk till thick. If you've really thought in advance you could chill the mixing bowl too - to prevent it heating and splitting. You can add sugar and vanilla if you want to make it slightly sweeter, like I did here.
It pipes beautifully. All the chefs and waiting staff liked the coconut whipped 'cream' version better than the normal dairy cream version - the piping bag and mixing bowl were wiped completely clean - you can't get much better recommendation than that!
If you're being hi-tech you can also use an isi gun for this. According to information received the isi gun likes 35% fat content and the average can of coconut milk is 20%, so add 2 tbsp of coconut oil to the coconut cream and mix at room temperature, then chill overnight in the fridge before putting in the isi gun. Using coconut milk with added guar gum is also another tip to help prevent the coconut cream and coconut oil from separating while chilling.
We finished this one off with dried coconut flakes and toasted coconut. Despite the fact that it helps distinguish the dairy free version from the normal one, it also adds a bit more coconut flavour! Should have added malibu!