Default Real chocolate ice cream

Hi I’m looking for a recipe to make ice cream or something like it, I mean not exactly ice cream but a frozen thread, I hope you get me.I have a bag of 100% real cocoa powder, which is really strong chocolate, and I would like to use for that, I have try to make the recipe with milk and chocolate mixed then I pour it into small bags and put it in the freezer, but the cocoa would go and stay at the bottom of the bag which didnt really came out that well, if you could help me as to how make it a better recipe please help.