Can you make the Haitian Hot Chocolate with cocoa powder instead of a cocoa ball/stick? Or, do you know where you can buy the cocoa ball/stick in the USA?

You might be able to find the chokola Aysiyen in some Haitian grocery stores in areas where there's a Haitian community.
I guess you can use the cocoa powder, add water and cinnamon sticks - I'm not sure if it'll taste the same.
The chokola Ayisyen is more dense.  You basically make it from scratch.

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