An authentic Cuban sandwich must have roast pork in it to be worth its salt, and if you want to do it right, make lechón asado. It's not just for sandwiches; this stands up on its own as a main dish with some rice and black beans.
Lechón Asado (Cuban-Style Roast Pork)
Ingredients:
First, make the mojo marinade.
15 cloves garlic, minced
2 teaspoons salt
2 cups orange juice
1 cup lemon juice
1 cup lime juice
1 cup onion, chopped
1 teaspoon oregano
1 cup olive oil
2 pounds boneless pork shoulder or loin of pork
Preparation:
Mix all ingredients together in a bowl or container. Add the pork and let marinate 4 to 5 hours or overnight.
Preheat oven to 325 degrees F. Place the pork and some marinade in a baking dish. Slowly roast in the oven until the internal temperature of the meat reaches 155 degrees F. Don't let the meat dry out; spoon more marinade over it if needed.
Remove from oven and let the pork rest for 10 minutes before slicing.
Related:
Cuban Sandwich
Recipe: Cuban Black Bean Soup
Cuban Mojo Marinade & Dipping Sauce
Recipe: Sweet Fried Plantains
(Image: Kathryn Hill)
TW Salt Mill by Wil...

Any recipe involving 15 cloves of garlic automatically goes into my rotation.
Could one adapt this to a slow cooker? Maybe 8 hours on low? Does that sound realistic?
@rkwong,
Yes, you can make this in the slow cooker. The only thing is that real Cuban roast pork is made with the picnic ham (bone-in and skin-on) and thus requires the dry heat of the oven to crisp the skin. If you don't mind not having the skin (the best part of roast pork, IMHO), you can use a nice, fatty pork butt (preferably bone-in) and slow roast it in the crock pot for 8 hours on low.
About how long will this take at 325? I'm guessing ~ 2 hours?
@fib, took me about 20 mins, but I had cuts of pork shoulder that were 2 inches thick.
I tried the recipe this past weekend, it was awesome. I used a bone in pork shoulder.