Quickest, and safest way, to bring milk to boil
I put the pan with the milk inside a larger pan containing some water. This makes it much harder for the milk to boil; but it doesn't need to boil in order to turn for cottage cheese. It takes much longer to turn this way (1-2 hours), but during that time I can pretty much leave it alone and just check back every 5-10 minutes to see if it's started to turn yet and give it a quick stir to break up the skin.