Place the can of coconut milk in the refrigerator overnight. The solids should separate from water. Once thick, drain the liquid and transfer it to a bowl. Using a hand mixer, beat until completely smooth.
Step 2
Add the cocoa powder, vanilla extract, and powdered erythritol. Optionally, adjust the sweetener according to your taste. Continue to beat until fully incorporated.
Step 3
Transfer the mousse to serving glasses. Garnish with some unsweetened chocolate and coconut flakes. Serve immediately.