Hi all! So I set up a 20lb brisket on the Big Green Egg, set the temp to 225 and put the brisket on. Now the BGE dome thermo showed 210 degrees, but my iGrill was showing 320 at the grid. I almost totally closed the vents and figured it was safe. Now 1.5 hours later (2 hrs total on the grill) the brisket is at 170!! Is there any way to save this thing?
Hi there and welcome!
No need to panic you are fine.
Brisket is a cut of meat that doesnt care what temp you are cooking it at as long as you aren't burning it and at 320F you aren't burning it so feel free to call off the red alert :)
Also I would highly suggest you check your probe placement. The best spot is the thickest yet center most part of the Flat muscle. Properly placing a meat probe in a brisket is actually a very difficult thing to do and because so I use at least 3 meat probes. Here is an image from a post I did early this year on this topic.
In the picture you see I have 5, yes 5 meat probes in a brisket and only 1 of them hit the magic spot and you can see the differences in Internal Temp (IT):
Finally as was mentioned, your brisket is done ONLY when it is Tender! It is tender when you stab it ALL OVER with something like a kabob skewer or your meat probe and it goes in like butter ALL OVER. If it doesnt pass the tenderness test ALL OVER then let it raise a couple of more degrees in IT and test again. Pull when tender :)
So again, keep calm u are ok. Just keep going and honestly you want to finish 4 hours before eating time anyway if you can. At that point you can tightly double wrap in foil, and then tightly wrap in 3 bath towels and set the brisket on the counter and I PROMISE it will be piping hot and ready to serve 4-5 hours later after it has rested and reabsorbed all the juices.
So again, again... keep calm u are ok and just follow the fundamentals here and that other guys have mentioned and you will have a successful brisket cook :)