I found this on a low carb site, tried it and really enjoyed it!
1 rounded teaspoon Hershey's Dutched Cocoa or other real cocoa powder (unsweetened)
2 cap fulls DaVinci Sugar Free Syrup of your choice. I used Caramel flavor.
1 cup boiling water
1 Tbsp. Heavy Cream
Boil the water. Put the cocoa powder into a cup and stir in the sugar free syrup until it makes a nice paste. Gradually pour in the water while stirring to dissolve the cocoa. Fill almost to the top. Then lighten with the cream