Take a big glass favourite regular white milk (I use “pur filtered 2%”)
add a teaspoon of your favourite cocoa (I use Fry’s Dutch processed)
Add sugar to taste (I use 2 teaspoons)
Put it all in the blender and mix it up for a few seconds
The chocolate milk that is sold in boxes is wayyy to sweet for me. It compares to Coca Cola for sugar content. Also I don’t care for all the factory chemical additives.
Some people think that they are egg nog conneisseurs - same thing - make it yourself with raw egg yolk. Way, way, way (yes 3 orders of magnitude) better