First, let’s address the elephant in the kitchen: the microwave. Yes, it’s fast. But if you nuke those potatoes on high, you’ll get a steamy, watery disaster. The microwave excites water molecules, turning your creamy mash into a soupy mess. Don’t do it. Unless you’re in a time crunch? Fine, but follow my rules.
If you must use the microwave, add a splash of milk (or cream) and a pat of butter first. Cover the bowl with a damp paper towel. Then, microwave on 50% power for 60-second intervals, stirring between each. This slow, gentle thawing prevents the starch from breaking down into paste. You’re essentially convincing the potatoes they’re still warm.