My mom always made hot chocolate from scratch... SO delicious! I use my cocoa cup for measuring the milk, and a regular teaspoon (not a measuring spoon) for the cocoa and sugar.
For each cup of hot chocolate:
1 cup milk
2 heaping teaspoons of Hershey's unsweetened cocoa powder
2 - 3 teaspoons sugar or the equivalent of sugar substitute (I know it's a lot, but hey, this is an indulgence!)
a tiny pinch of salt
I just place all the ingredients in my Cocomotion machine, and it does the rest.
If you don't have a machine:
Mix the cocoa powder, sugar, and salt together.
Add to warmed milk and stir with whisk to combine and continue heating.
Serve piping hot... with marshmallows if desired!
NOTE: When making 3 or more servings, I add a little (a little!) vanilla extract -- this gives it an extra rich and yummy kick. But be careful with the vanilla because it can take over the flavor of the cocoa. I find that when making just one or two cups, it's almost impossible to get the vanilla right, so I just leave it out.