That sounds yummy! Look at the nutrition info. I think my heavy whipping cream says 1 carb per tablespoon, so if it only took a 2 liquid tablespoons to make that half cup there would be 2 carbs in it. Then the cocoa is like 1 carb per tablespoon too. So with that basis 3 carbs for a yummy dessert like that as a treat doesn't sound bad. I know some people don't think sweets are good on induction but if it keeps you on plan and you are eating enough veggies I think you're good.
Let me know how much cream you used, I will have to try this!
Thanks!