Hey, Mike, I have not done a calibration of the thermometer. Maybe I should check that first of all. I'm lighting the charcoal in a charcoal chimney starter over a propane burner on my grill right next to it and then dumping the lump into the Egg. I left the lid open long enough to see that it was burning and crackling etc. Maybe I have to leave the lid open longer. I'll try the calibration thing tonight. It seems to be pretty close just by the ambient temp it reads, but I'll check it with boiling water tonight.
