This one was done all in my Kamado Joe (charcoal smoker).

I've done a smaller brisket in an air B&B with a group of lads. I had it in a little portable smoker for about an hour to get some smokey flavour & then transferred it to the oven.

We were out (Bitcoin conference) for about 12 hours while it slowly cooked in the oven. It came out beautifully. I had it on about 120⁰C or 250⁰F according to the dial but many ovens are a bit lower than what they actually are - 220⁰F is ideal.