In a large crockpot or soup pot, add in all ingredients.
Mix together with a whisk until cocoa powder has mixed in completely.
In a crockpot, heat on high for 2 hours stirring occasionally. Once hot, reduce to the keep warm setting. Keep covered until ready to serve.
Stovetop, heat on medium until hot with the lid on, stirring occasionally. You do not want it to boil. Reduce to the lowest setting your stovetop will go and keep covered until ready to serve.