I don't touch the stuff myself, but people I know who are well into it assure me that microwaving it is a bad idea. Mind you, these are the kind of snobs who turn their noses up at most teabags, and they say that about coffee as well, so who knows? I've never been able to notice any great harm from doing that myself. In fact, before I was warned to cut down on my dairy intake, I used to fake cappucino by microwaving two or three spoons of instant in a cup of milk."