Yeah I just wash it with hot water. If I'm using it in the afternoon having made a morning coffee a few hours before, I'll just use my fingers. In the evening I'll clean it a bit more carefully, with a sponge or whatever I have.

Once I was curious if I was using my moka pot "wrong" so I checked some videos on YouTube and some of the people had immaculate Mokas. Like mine are clean, but these were near mirror-finish polished even though they'd been used.