Clarified a pound of unsalted butter. Set it at 240F for 20 minutes and ignored it until the buzzer went off. Skimmed off the white stuff and poured it into a Mason jar. When I started to pour you could see through it, it was crystal clear. I then managed to bump the pot and a bit of the dregs got mixed up in it so the end result is not quite as clear. Still, the process was nice and easy.