With a boiling pot of water with lid on, can I get different steam temperature? This is without the use of a pressure cooker. I understand the phase change process of water to steam and that steam contains higher energy than boiling water. But is the steam maxed at 100 deg C by boiling a household-pot of water and a lid? Or can I increase the steam's temperature further by applying more heat on the pot? Or will that just increase the production rate of steam? 
There are certainly culinary uses for burnt milk.  You could make burnt milk ice cream, or burnt milk pudding. The second link is from the NYTimes, in case it is paywall protected, here is another example.  It might be worth an experiment to see if it is to your liking. 