I'm guessing that this dish is something that's commonly made in homes all over the place. That said, I did discover it for myself -- even though I'm sure I didn't invent it -- and I've been making variations of it for a few years. Still, when I mentioned it to a friend, he sounded interested and suggested that I document the process.
In my recent quest to eat healthier, this recipe and method have become more a part of my regular rotation than an occasional thing, which made documenting the process fairly convenient. What I love about it is that it's got intense, explosive flavor but doesn't have much fat or sodium and is relatively low in carbohydrates on a per-serving basis. It's hearty, filling and versatile, too.
So, without further delay, I present Carne (of your choice) en Chile!

The dish starts with dried chiles . . .

Clockwise from bottom: 3 oz of dried ancho chiles, 4 guajillo chiles and 4 pasilla chiles. You can use any type you like. I've come to appreciate this combination because it strikes a nice balance between heat and sweet.

After I seed them (doing my best to preserve the ribs), I briefly toast them in a hot, dry pan to bring out their flavor.

The reconstituted chiles become the basis of a braising medium in which the meat will cook. For this batch, I use 1/4 cup of apple cider vinegar, 1/2 cup of apple juice and 1 cup of chicken stock . . .

Once the chiles are placed in the pan, turn the heat to medium and gently pour the liquids over them.

I wouldn't exactly call it a secret ingredient but sometimes I also add about 1/2 a beer. In this case, I had more chiles than my standard trio of liquids would cover, so I added enough beer to cover the chiles and let the pan simmer for about 20-30 minutes -- until the chiles were soft.

Once the chiles have reconstituted, I place them and all the liquid in a high-sided restaurant pan and hit them with the stick blender.

You're looking for a relatively smooth, homogenous consistency. Once you've created this chile paste, set it aside and begin the next step . . .

I create a spice rub that will be used to season the meat before it's cooked. Clockwise from bottom left are 2 tsp finely-ground Mexican oregano, 1 tsp ground New Mexico chile, 2 tsp cumin seed, 2 tsp black peppercorn and 2 tsp Kosher salt (in the middle).

For best results, toast the cumin and black pepper briefly before you grind them.

The spices are now ground and ready to be combined.

Mix well and set the rub aside while you move on to the next step . . .

For this batch, I used about 4.5 pounds of pork tenderloin. It's not the leanest choice but it's a good compromise. You could use chicken (I often use boneless, skinless thighs) or even beef.

Definitely remove the silverskin from the tenderloins.

Hit the meat -- which is now cut into 2"-3" chunks -- with the spice rub . . .

Cover both sides of the meat well and set it aside while you move on to the next step . . .

For this batch, I used some jalapeno, poblano, onion and garlic.

Put a rough chop on these items and set them aside momentarily.

Get a dutch oven nice and hot, then add 1-2 tsp of olive oil (or an oil of your choice). Give the oil a moment to heat and then add the seasoned meat to the pan . . .

You're looking for a decent sear on the meat . . .

. . . and a nice fond on the bottom of the dutch oven. Set the seared meat aside and have your chopped vegetables and garlic at the ready . . .

Into the pot they go.

Let them brown lightly and if you're using jalapeno or other hot peppers, be careful of the vapors, which will rise up quickly.

The veggies should produce enough moisture/steam to effectively deglaze the pan. If not, once they have browned slightly, you can add some of that leftover beer, which should do the trick.

Now, add the blended chile mixture to the pot, with the sauteed veggies.

Mix to combine well.

Place the seared pork back into the dutch oven, submerging it as best you can.

It's not critical that the meat be completely covered. This type of braise is fairly forgiving.

Cover the dutch oven and place it in a 275 F degree oven.

After about 2 hours, the meat should be tender and ready to shred.

Use a tongs or other utensil to "pull" the meat. Mix it well with the remaining braising medium.

And you're done.
A few ways I like to eat this include: on a plate with some beans and/or rice, on a tortilla or sandwich, in an omelette or even atop a salad.
=R=
By protecting others, you save yourself. If you only think of yourself, you'll only destroy yourself. --Kambei Shimada
Every human interaction is an opportunity for disappointment --RS
There's a horse loose in a hospital --JM
That don't impress me much --Shania Twain