Step 1: Season the beast
Step 2: Start wrapping
I start by tightly rolling it in one direction, and I tuck in the ends of the paper to create a packet. After rolling this with about 6-7 layers of wax paper I cut the paper and rotate the roast and roll it end over end a few times. I tuck in the sides while doing that. I finish off the roast by rolling it another 6-7 times in the original direction, again tucking in the ends as I go.
In the end you should have a nice compact rolled roast.
Step 3: Truss me around this
You will want to truss your roast, this step will keep it from falling apart over the fire.
Make sure you secure the open ends so that they can remain closed. It doesn't have to be a fancy job, just make sure it's thorough.
Now if you go camping for a while (I usually go for 10 day stretches) I suggest that you freeze the roast (in a Ziploc bag) and use it as additional ice for your cooler. As a result I usually serve this meal around day 3-4, basically once it's thawed out. If you try cooking this puppy before it's thawed, then you are on your own for the results, I can't guarantee the cooked to perfection!
This year I will be trying wrapping my roast on the outside with some newspaper to see if it will remain frozen longer. If you try this, remove the newspaper before cooking. (edit: the newspaper helped a great deal with keeping things cold)
Step 4: Prepare the fire
I prefer regular coals myself so I stoke a good fire first.
Push the coals around to create a nice warm bed for your packet. The fire will continue to burn on one side of the fire pit, but you want most of the heat to come from the coals.
Step 5: Place the packet on the coals and wait
In terms of rotating, we are considering this packet as having 4 sides. Each side will be cooked for 15 minutes on the coals. When the 15 minutes are up carefully rotate the roast 90 degrees in one direction to place the next side on the coals. At the end it should look a lot like the final picture in this set.
If you don't like your roast done medium rare, go to the final step to find out about cooking times.
Step 6: Once you've rotated 4 times (cooked all sides)
After an hour you should have cooked 4 sides for 15 minutes each. Carefully remove the roast from the fire and place it on a tray/plate/whatever you've got. Peel the paper back gently and allow the roast to sit for 10 minutes (this will allow the juices to remain inside) You will have to pick off some of the paper left over on the roast while you wait. The first picture has some of the paper on the right and some left to remove.
After the roast is well rested, cut and serve. You should have a beautiful medium rare roast at your disposition.
Step 7: Some things to consider...