On a high fat diet because you've cut all the carbs out and have to have something to burn? Or simply want to make a nice treat but you don't have the energy/skill/accessible kitchen to do anything interesting? How about making a cream soda?
- sparkling/seltzer water
- flavored syrup (sugar free if you are avoiding carbs)
- whipping cream
There are no particular amounts to use, because measuring takes the surprise out of life. Experiment with what seems good to you.
Pour syrup (this is the sort of syrup used for coffee drinks) and cream into a glass filled with ice. Pour sparkling water over it. Mix with an ice tea spoon.
Be careful! As with ice cream floats, this treat can rise well above the edge of the glass, so you can't see where the liquid starts and the foam begins. Taste your drink and decide if you need more of anything.