First off, if you landed here expecting an approximation of the carnitas from Chipotle Mexican Grill restaurant, you’re in the wrong place. Instead, it’s my slight twist on traditonal carnitas, the mexican pulled-pork staple.

Carnitas is one of my favorite taco and burrito fillings, but I’d not made this delicious meat at home.
I decided to start with Rick Bayless’ recipe that employs a two-phase cooking method: first moist, then dry[ing]. My variant uses chipotle peppers for flavor, rather than other spices or smoke flavoring.

Truth be told, my newfound inspiration to  actually make carnitas was that I found a lean 2 pound pork rib end roast in my freezer; I’d bought it some time ago on sale for less than $3 per pound. Also, I happened to have a broiler pan with rendered bacon fat from yesterday’s breakfast. Bacon fat is typically quite salty (compared to lard), but I had accidentally purchased low-sodium bacon, so I decided to experiment with using the bacon fat in place of salt and lard, or oil, that you typically find in carnitas recipes.

First, I soaked two large dried chipotle peppers, rinsed them, removed the veins, seeds, and stems, and then liquified them with some of the soaking water (~1 cup) in a blender.

Next, I cut the pork into approximately 2″ cubes and placed them in a baking dish. Because the rib end roast was quite lean, I added the warm rendered pork fat (~1/3 cup) from cooking 1 pound of low-sodium bacon (left from yesterday’s breakfast).

I poured the chipotle and water mixture over the pork, covered the dish, and put in a preheated 375° F oven for 1 hour.

After this, I uncovered the pork, placed the baking dish on a foil-covered pan (in case of spatter), and “dry cooked” until the water mostly evaporated, leaving just the rendered fat. During this phase, be sure to turn the pieces regularly, e.g., progressively more frequently to every 7-15 minutes, both to keep the pieces moist and to prevent burning on top.

Total cooking times was 2 hours 15 minutes: 1 hour moist cooking (covered) at 375° F and 1 hour 15 minutes dry cooking (uncovered, turning occassionally) at 450° F. Afterwards, I used two forks to pull the pork into small pieces.

I served the carnitas in tacos, on warmed tortillas, topped with a homemade chipotle garlic salsa and slices of fresh, ripe avocado.

This was a satisfying first effort at carnitas, having mild smokiness both from the bacon and from the chipotles. I’ll definitely make it again. I’ll caution you about using bacon fat here, though… it definitely had a generous amount of salt, so don’t add any more. A less-lean cut of pork would be a better option, obviating the need for added fat to get the moist consistency that one expects from carnitas.

Here are the recipes I consulted for preparation ideas:

• Slow-Roasted Pork Carnitas (Chef Rick Bayless)
• Carnitas (Food Network)

UPDATE (March, 2013):

I made this again, this time with pork shoulder roast ($1.99/lb.), just its natural fat and a bit of salt, but with many more rehydrated chipotles and an ancho chile.  This was great too, and less salty than the prior experiment with rendered bacon fat.

UPDATE (March, 2014):

I tried this same preparation with beef shoulder roast. Unfortunately, this isn’t a great technique for beef; it just wasn’t tender. Once cooked, I had to chop the meat into tiny pieces. It tasted good, and is not unlike the texture of the finely chopped steak some mexican kitchens serve, but isn’t tender the way pot roast or barbacoa would be. For that, you’ll have to slow cook for longer time.