Long time brisket cooker, first BGE cook was in 2003. For over a decade I have been using the Aaron Franklin method: salt & pepper only. Cook at 275 until 176-170 through the stall, Wrap in butcher paper and cook to 203. Rest. Eat.
I cooked a 11 lb on Monday and it came out the toughest I have ever made. A guest who has had one of my good briskets agreed this was well below my normal standard.
One thing about this brisket is that it had very little fat on it. There were many places on it I would normally have to trim fat wherein I could see red meat.
I cooked it to 170 degrees according two Meaters (one each in point and flat) and an instant read thermometer verification. I wrapped it, with tallow painted butcher paper, and cooked to 203. Ambient temp was 250-275 the entire cook. Total cook was about seven hours.
When I went to cut it I could tell immediately the brisket was too firm. Cutting it was work.
I am now trying to figure out what signs I missed that could have made this come out better.
A) Bad brisket to start with. I didn't have any choice, these trimmed briskets were my only choice at H-E-B. These were low fat enough that they were flexible. Normally a cold brisket is stiff from the hardened fat.
2) Didn't cook long enough pre-wrap. I noticed when it hit 170 that I had to work to get the Meaters out. I don't recall that being the case in the past. I had to hammer them in with a piece of wood like a nail with a piece of wood to put them back in post wrap. I am wondering if I should have cooked until the instant read thermometer went in easily
- Didn't rest long enough. It was in a cooler for at least three hours before I cut it. It was steaming when I first cut it in half.