There is a simple recipe. I'll give it here just in case you may be like me and had to go and look it up.
Homemade Hot Chocolate
1/3 cup cocoa powder
1/2 cup sugar
1/3 cup boiling water
pinch of salt
Mix in pan until dissolved then add,
4 1/2 cups milk and heat until hot.
Stir in 1/2 teaspoon vanilla
You may add extra milk or half and half to cool it if it is too hot for immediate sipping.
I keep the extra in a mason jar in the refrigerator for afternoon warm and cozy breaks. Don't we all just need those sometimes?
Have I used the word cozy enough already?