Carefully cut the kernels corn cobs. Place corn kernels in a blender or food processor, along with about half of the milk. Process until corn is very smooth - around 2 minutes. Transfer corn puree to a medium sized pot, along with the remaining milk. Bring just to a boil, stirring frequently. Remove from heat.
Strain corn mixture through a wire sieve, into a clean bowl.
Rinse pot and sieve out with cool water. Line sieve with at least 3 layers of cheesecloth, strain corn liquid through cheesecloth, back into the pot.
Add sugar, cinnamon stick, and salt to corn liquid, stir until well combined. Bring back to almost a boil, turn heat down and allow to simmer for 5 minutes, stirring frequently.
Use a use a milk frother to froth the corn milk mixture as much as you’d like.
Divide hot coffee between 2 mugs,
Pour frothed corn milk into each mug.
Garnish with a sprinkling of ground cinnamon, serve immediately.