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La Caja China Pig Roast
My brother Matt is our king of the pig roast.
Years ago, he bought a La Caja China roasting box. Ever since, about once a year, he treats us with a pig roast. There’s nothing quite like inviting 30 friends over, dropping a whole pig on the kitchen island, and telling them: “dig in!”.
The roasting box is a metal lined wooden box. You dump a lot of charcoal on the lid - a LOT of charcoal - and the heat radiates through the metal lid, turning the box into a high heat roasting oven. The roasting box cooks a whole pig in about 3.5 hours, depending on the size of the pig. (50 to 100 pounds - a small pig - is about right for the large #2 size La Caja China). I’ve made some fantastic pork in my day, and this pig matches any of them.
Clockwise from top left: Pig in the roasting rack; pig in the box; starting the coals; adding more coals after an hour
For the last day of our cottage vacation, Matt ordered a 75 pound pig from the West Side Market and invited our extended family for a pig roast. I’ve been meaning to blog about Matt’s pig roasts for a while, so this was my big opportunity. I was there for the whole process and had time to help out and had time to take pictures while my brother Pat helped out with the cooking. (Sorry, guys!)
Clockwise from top left: Adding more coals; shaking out the ashes; peeking at the pig skin; ready to serve!
Having a second person to help is important. A whole pig is too large for one person to handle, especially when it is spread out in the roasting box's cooking grid. Now, don’t worry - a roasting box is surprisingly hands off. Most of the job is sitting around the roasting box and drinking beer while the pig roasts inside. Add some charcoal every hour; shake out the coals and flip the pig for the last 30 minutes to crisp up the skin. That’s it; after 3 ½ hours, you have a gorgeous roast pig to shock and awe your dining crowd.
Recipe: Matt’s La Caja China Pig Roast
Inspired by: Roast Pig instructions, La Caja China [lacajachina.com]
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Matt’s La Caja China Pig Roast
- Total Time: 51 hours 30 minutes
- Yield: 38 servings 1x
Description
Matt's La Caja China Pig Roast - cooking a 75 pound pig in a La Caja China roasting box.
Ingredients
- 75 pound dressed pig (That is, cleaned and gutted. Will serve about 38 people.)
- Small Apple (to shove in the mouth - the teeth are sharp. Note that we forgot this in the pictures…)
- ¾ cup kosher salt (about ½ teaspoon per pound)
Rub (My homemade rub, or use 0.75 cup store bought rub)
- 4 tablespoons paprika
- 4 tablespoons brown sugar
- 2 tablespoons chili powder
- 1 tablespoon ground black pepper
- 2 teaspoons garlic powder
- 2 teaspoons onion powder
- 1 teaspoon dried thyme
Instructions
- Dry brine the pig: 24 hours to 2 days before cooking, sprinkle the pig with the salt, concentrating most of it on the meat side - that is, a little on the skin side, more on the meat side. Store the pig in a large cooler, covered with bags of ice. (Don’t open the bags - Replace bags as they melt. We swapped in a couple of big bags of grocery store ice every 24 hours.)
- Season the pig and spread it out in the roasting rack: The day of cooking, remove the pig from the cooler, pat it dry with paper towels as best you can, then spread the pig out on top of one of the roasting racks, skin side down. Sprinkle the meat side of the pig with the rub. Make sure the pig is spread open - we want it spread out as much as possible to cook evenly - and set the other roasting rack on top of the pig. Connect the racks with the s-hooks, sandwiching the pig between the racks. Set the drip pan in the roasting box, and then put the pig in the box, on top of the drip pan, skin side down.
- Cook the pig for 3 hours: Close the box with the ash pan and charcoal grid tray. Pour an entire 16-pound bag of charcoal into 2 big piles on top of the charcoal tray. Light the charcoal - this is one time when it’s OK to use lighter fluid, because the pig is protected from the flavor of the fluid in the box. When the charcoal is covered with ash, spread it out into an even layer over the entire charcoal tray, and start the cooking timer. After 1 hour of cooking spread 8 pounds of unlit charcoal over the top of the box. After 2 hours of cooking, spread another 8 pounds of unlit charcoal over the top. After another 30 minutes (2.5 hours of cooking), spread another 8 pounds of unlit charcoal over the top, and cook for 30 minutes more.
- Crisp the skin for 30 minutes: After 3 hours of cooking, have two people wearing hand protection lift the charcoal grid tray and shake out the coals into the ash pan. Carefully set the charcoal grid on the handles of the roasting box. Lift the ash tray off of the box and dump the ashes into a fire-safe container. Lift the charcoal grid off of the handles, slide the ash tray underneath, and set them both back down on the handles for now. Flip the pig in the box so the pig is skin side up. Set the ash tray and coals back on top of the box, closing it once more. Cook the pig for 30 minutes to crisp the skin. At that point, check the pig - lift the edge of the lid of coals and peek at the skin. If the skin is browned and crispy (and maybe blackening a little at the edges), it is done. Otherwise, keep cooking, peeking every 10 minutes or so, until the skin is browned and crispy.
- Serve: Again, wearing hand protection, have 2 people remove the ash pan and coals to the handles of the box. Grab the pig and carry it to a table (we cover a table in aluminum foil and then a layer of kitchen towels). Remove the top grid and set it aside, then let the pig rest for 15 to 30 minutes. To serve, you can let your guests tear into the pig themselves (our usual approach), or start “picking the pig” and shredding the meat yourself. (Don’t forget pieces of the crackling skin - they’re the best part.)
Notes
- Why "La Caja China" for a Cuban roasting box built in Miami? I...I don't know. The best guess is "Chinese Box" sounded exotic in Cuba back in the day.
- How big of a pig? Assume 2 pounds of dressed, uncooked pig per person. That means my brother’s 75 pound pig would serve about 38 people. This is “dressed weight”, meaning a cleaned and gutted pig. A “live weight” pig weighs about 25% more, so make sure you’re asking for dressed weight. (Or increase by 25% for a live weight pig, before they dress it - about 2½ pounds of live weight pig per person.) My brother’s roasting box will fit up to a 100 pound pig.
- Don’t have time to dry brine? Skip that step, and sprinkle the pig with the salt and rub right before cooking. It will still taste pretty darned good.
- Injection brine: Instead of dry brining, my brother will sometimes use an injection brine. (If you go this route, skip the dry brine salt from the recipe and make a double batch of rub - some for the injection brine, some for the pig.) The night before cooking, whisk this marinade until the salt dissolves, then inject it into the meat of the pig - aim for every 3 to 4 inches in the shoulder and legs, and inject in a couple of places between every rib:
- 2 cups apple juice
- 2 cups water
- ¾ cup rub (make extra)
- 1 cup kosher salt
- 0.5 cup Molasses
- 0.5 cup apple cider vinegar
Keep the pig overnight in the cooler, covered with ice, so the brine has time to absorb into the meat. Follow the cooking instructions as listed above, starting with the rub.
Tools
- La Caja China Roasting Box, Model #2 is the right size for a 50 to 100 pound pig
- 150 quart cooler, plus bags of ice as needed (we added 2 bags a day while dry brining)
- 2 pairs Welding Gloves to protect your hands when you move the coals. (Pig roasting is a 2-man job, so you’ll need 2 pairs of gloves)
- 3 - 16-pound bags of charcoal
- Prep Time: 2 days
- Cook Time: 3 hours 30 minutes
- Category: Sunday Dinner
- Method: Roasting Box
- Cuisine: American
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JC says
Good job! Pig looks great!
I also use the china box, very simple and efficient.
Curious, whats with the umbrella's? keeping smoke away from that side?
Mike Vrobel says
Improvised windbreak. It was a very windy day, and we were having trouble getting the charcoal lit.
Kevin C says
I don't have welding gloves, would oven mitts be enough? It seems like they would since the oven gets hotter than the caja china gets.
Mike Vrobel says
It depends on the oven mitt, but probably? I'd suggest one that comes up your wrist, to protect your arms.
Bear says
La Caja China’s more literal translation is The Magic Box.
Frank Fulmer says
Back in the day, when we cooked whole hog bbq we used concrete blocks arranged in a sguare. We did not brine or rub the meat. We used fence wire an laid the hog out on the wire then put another piece of wire on top of the hog and threaded one metal rod through both pieces of wire on each side. This enabled two people at each end to turn the hog over. The fire was charcoal and oak wood chunks and when burned down good the coals were raked down evenly in the box and hog was laid out on top of the fire. We used a bucket of seasonings and sauce and a small mop and keep the hog moped down while it cooked. Some real good eating.