Prime Rib Cook Time?

[ILMsmoke]

It's been a while since I've cooked a prime rib and I cant seem to find the cook time per inch in Meatheads Article anymore. I did find a lot of info about cook time, but no actual guideline. I will be smoking at 225 and then reverse searing. I may potentially have to hold the meat for an hour or so and it gives me another question. If I get done done early should I sear it, wrap it and hold it in a cooler? Or, Cook it to 115 it and hold it til 10 mins prior to serving and sear it know I will be increasing temp as I hold for a period of time. We also have an Avantco food holding/proofing cabinet at work that I've never used, but could use if it'll help.

[Joey877]

I am not positive but I am pretty sure it is a half hour per inch of width. Mine always take around 3 to 3.5 hours and I'm usually doing a roast in the 6-8 pound range (around six inches across).

[jfmorris]

It took me about 3 hours on my SNS Kamado to do a full prime rib that was about 8-9 pounds. I had removed the 7 bones AND the spinalis, and that includes time to sear over the SNS and a brief rest while the rest of dinner came together. I was running the cooker at 225F in the indirect area of the grill.

[ILMsmoke]

jfmorris, I believe you are correct on the 30min per inch. I read his article on cook times about double the thickness requires twice as long also

[Mosca]

For almost any prime rib that isn’t oversquare I plan on 4 hours. It will hold an hour, easy. And if it isn’t going fast enough you can bump the temp up to 275 with no ill effects.

edit: by oversquare I mean something like 2 ribs, where it’s really just a super thick steak.