Easy in the microwave! This is my original recipe! It's a rich and tasty drink made with unsweetened cocoa powder.
I wondered if it would be more delicious made with cocoa powder rather than store-bought cocoa. I tried it and yes, it was more delicious.
If you microwave it, small bubbles will appear on the surface, and it will be richer than if made in a sauce pan. Heating times will vary depending on the wattage of your microwave, so adjust accordingly.
Enjoy Japanese food around the world.