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I thought one of the reasons not to use a microwave is that it's way to easy for the water to get superheated. Especially in a ceramic mug that is smooth on the

I thought one of the reasons not to use a microwave is that it's way to easy for the water to get superheated. Especially in a ceramic mug that is smooth on the inside, with no nucleation sites for the water to form steam it can get way over boiling point fairly easily. Then when you put something in (like a teabag or sugar) you're dropping a ton of nucleation sites in and the water will flash to steam, occasionally exploding the mug. But maybe that's just an urban legend. /shruggie Mythbusters took a look: https://www.youtube.com/watch?v=1_OXM4mr_i0 https://www.youtube.com/watch?v=1_OXM4mr_i0 Could you use a small saucepan and bring water to the desired temperature if you don't want to use a microwave or teapot? Maybe a small coffee maker without any coffee in it, just to get the water up to the temperature you want.

nkurz 6y ago
I read the superheating theory too, but I don't think it's really a concern, especially if you are using a timed heating of a measured amount of water. If you've figured out how long it takes to get to 185F, you aren't going to unexpectedly reach 220F. More generally, I'm not worried about boiling water in the microwave for other purposes, and if it was a problem, I could probably avoid it by throwing a couple marbles in. Definitely there are other ways I can heat water to make tea. I was asking the question in an open-ended manner in case someone had a microwave method that I wasn't aware of. For example, there was an Australian study that got some attention a couple years ago suggesting that one got the best extraction by microwaving with the tea in the water. This dodges the question though of whether the "best extraction" equals the "best cup of tea".