Whisk together the sugar and cocoa powder. Note that this recipe can scale up to make as much as you want, just keep equal parts of both ingredients.
Start heating up your milk in a sauce pan, and whisk in your mix.
Once hot (but not boiling), add your chocolate chips and stir to melt them in and smooth it out.
Embellish and serve! Whisk in vanilla extract or another extract. Top with whipped cream and any cinnamon, chocolate drizzle, candy bits, or chocolate shavings you like. Make it yours!