Nuke about 2/3 to 3/4 cup of milk for about 45s. I use the organic whole milk from Costco, not because I’m an organic everything person, but because it froths up nicely.
Dump into an insulated Tervis cup and froth with wand. I use this one:
https://www.amazon.com/Zulay-Original-Milk-Frother-Handheld/dp/B09D8T11YS
Make a double espresso. Dump into the top.
Enjoy!
Oh, and I nuke the milk in a 2 Cup Pyrex measuring cup.