In a saucepan, add cocoa powder, sugar, cinnamon powder, salt and mix well.
Pour 1 cup of hot milk and beat well. Pour the remaining milk and heat the pan. Keep stirring.
Boil it for few minutes till it is nicely combined.
Add 1 scoop of vanilla ice cream in 4 serving glasses.
Pour hot chocolate over it, add few chocolate chips on top and serve.