The proper way to make hot cocoa for small children that is not "too hot". This recipe makes two perfect-temperature teacups worth of hot cocoa. Definitely serve with saucers - it's "fancy" and it catches sticky drips.
Gather your ingredients.
In the microwave, heat 1 cup of milk (or water) for 1 min 30 sec.
In a separate mixing container, pour pouch of hot cocoa mix (whatever an individual serving is) and add hot milk, whisking until smooth.
Pour equal amounts into two teacups. Top off teacups with cold milk.
Add marshamallows if you choose (exactly equal numbers for each child or there will be problems) and serve. This is exactly the desired temperature for preschoolers.