Pretty obvious in't?
basically, this damn cauldron won't light. I dropped 3 blocks of wood and 60 liters of water in there, pressed Light and 10 minutes later it isn't boiling. I waited another 10 minutes. Nothing.
Hell, not even an hour later, when I got back from a hunting trip (Which failed miserably, I got mauled by a fox chasing me back to my boat) It still was not boiling. Still full.
So...