Recently smoked my second brisket on my oklahoma joe highland. This one has stumped me as I was prepared to have this take upwards of 18 hours. Started at 9pm at 230 degrees with a couple of temp fluctuations that never went above 260 for any length of time. This brisket went to 165 within almost 2 hours and reached 195 between the point and flat within 5 hours. Was done so fast had to wrap and in towel and cooler until next day as we meant to have for dinner. To my surprise we found the brisket to be very tender and would have to rate the taste an overall good rating. How is it possible for this packer to have cooked so fast and without a stall at all?