I did a "dry run" in early November in anticipation for Thanksgiving. I didn't use a true Turducken. I substituted a pork tenderloin for the chicken. I layered the inside of the turkey with peppered bacon, then stuffing, then the duck, then more stuffing, then the pork loin. While I could have gone for even more stuff inside it (that was part of the learning curve) I didn't. It was a little flattened, but looked pretty much like a raw turkey.
After that, the biggest problem was keeping the temperature up in my smoker. Before putting it in, I browned the bird in a conventional oven a little. This produced about 8 ounces of drippings in 30 minutes. (I had used 2 pounds of thick bacon, plus the duck, plus sausage in the stuffing. Transfering the roast to the smoker, it stayed in for six hours, because the temp went down once. After 3-1/2 hours I covered it with foil to stop coloring the bird. At this point, it looked EXACTLY like turkeys I had done previously in the smoker, so I was happy.
After taking it out I allowed it to rest for almost an hour. I ve heard that the way to carve was to go lengthwise, but photos of this look to me like autopsies, so I made a lateral cut at mid-bird. It was beautifully layered. Did I mention that I drained over 16 ounces off it--probably more. Ducks are fat.
RESULTS: Pre-cooking, I had a 24 pound Turkey, a 7 pound duck, a 2 pound pork tenderloin, 2 pounds of bacon and stuffing weighing (?).Around 36 pounds raw weight. I had brined the meats, so these are minimum weights. Final product looked the same (unshrunken--really beautiful).
I had 8 guests, and there was very, very little left. Most of the people there didn't ever eat white meat turkey, but this time they did and couldn't get enough. One of the guys complained of "meat sweats". I attribute the surprising results to the duck and bacon basting from the center. The Duck pretty much disappeared as a distinct portion, but was a major contributor of flavor. Everyone thought it was a condiment. The bacon had been peppered from Sam's Club (I haven't been able to find any more since. They just don't carry it.) and it contributed a delightful peppery flavor to the entire roast.
Two of the guests tacked "whole slices". These were just over 1/2" slices that overlapped the edges of the plate all the way round. They looked truly disgusting.
I'm doing another one for Christmas (it's Saturday as I write), and I'm hoping that my first one wasn't "beginner's luck".
Mike Morgan, Gaithersburg, MD