1.
Preheat fan oven to 180°C. Grease and sugar the ramekins to avoid sticking.
2.
Melt the butter and chocolate in a microwave proof bowl for 30 seconds at a time, stirring each time.
3.
Add the egg yolks, half the coconut sugar, salt and vanilla.
4.
In a separate bowl, beat the egg whites with a standing or hand mixer until you have stiff peaks. Add the other tbsp of coconut sugar and the vinegar and mix briefly.
5.
Fold the egg whites slowly into the chocolate mixture. Divide the mixture among the ramekins and bake for 20 minutes.