Gochujang Samgyeopsal (Spicy Korean Pork Belly)

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Whenever rain falls outside my window in Seoul, my mother pulls out a heavy skillet and a bright red tub of fermented chili paste. In Korea, cloudy days bring an almost universal craving for the sizzle of rendering pork fat. While unmarinated samgyeopsal (grilled pork belly) cooked right at the dinner table gets most of the international spotlight, home cooks across Seoul know that gochujang samgyeopsal (spicy pork belly) is where true comfort lives. Thick strips of pork belly marinated in a sweet, savory, and pungent red pepper sauce, caramelized in a hot skillet until the edges turn crisp and slightly charred—it is irresistible with a bowl of warm rice.

Many people outside Korea confuse this dish with jeyuk bokkeum (spicy pork stir-fry). While both share a similar chili marinade, traditional jeyuk bokkeum relies on thinner slices of leaner pork shoulder or front leg meat cooked quickly with soft vegetables. Gochujang samgyeopsal, on the other hand, centers entirely on thick cuts of pork belly. The higher fat content of the belly melts under heat, basting the heavy gochujang glaze into a smoky, candy-like shell. In my family, we make this when we want a hearty dinner that feels like a night out at a neighborhood K-BBQ joint without setting up a tabletop grill.

Why This Works

• Two-stage searing prevents scorching: Pork belly is high in fat, while gochujang is high in natural and added sugars. Rendering the pork belly briefly before tossing it with the marinade cooks the meat through without burning the delicate chili glaze.
• Grate fruit for enzymatic tenderizing: Incorporating freshly grated Asian pear or apple into the sauce breaks down tough pork fibers and adds a clean, balanced sweetness that masks gamey pork odors.
• Gochujang and gochugaru balance: Using only gochujang makes the sauce heavy, sticky, and overly sweet. Combining gochujang paste with gochugaru (Korean coarse chili powder) gives bright red color, clean spice, and the perfect coating consistency.

Ingredients

• 500 g (about 1.1 lbs) pork belly, skinless, cut into 1/4-inch (0.6 cm) thick slices
• 2 tbsp (32 g) gochujang (Korean red pepper paste, such as CJ Haechandle or Sunchang)
• 1 tbsp (8 g) gochugaru (Korean chili flakes)
• 2 tbsp (30 ml) soy sauce
• 1.5 tbsp (22 ml) mirin (rice wine)
• 1 tbsp (15 ml) toasted sesame oil
• 1 tbsp (15 ml) honey or brown sugar
• 2 tbsp (30 g) grated Asian pear (or sweet Gala/Bosc apple)
• 4 cloves garlic, finely minced
• 1 tsp (5 g) fresh ginger, finely grated
• 1 medium yellow onion, sliced into 1/2-inch strips
• 3 green onions (scallions), sliced diagonally into 2-inch pieces
• 1 green Korean chili pepper (cheongyang) or jalapeno, thinly sliced (optional for extra heat)
• 1 tsp (3 g) toasted sesame seeds for garnish

Substitutions

If you cannot find every traditional ingredient at your local supermarket, here are practical swaps that still deliver genuine flavor:

• Pork Belly: Look for skinless pork belly slabs at Costco or your local butcher and slice them yourself. If pork belly is unavailable or too fatty for your taste, substitute boneless pork shoulder (pork butt) sliced as thin as possible. Avoid pre-smoked bacon, as the cured smoky profile overpowers the marinade.
• Asian Pear: A firm Bosc pear, Fuji apple, or Gala apple works perfectly. In a quick pinch, 2 tablespoons of unsweetened applesauce brings the needed moisture and enzymes.
• Gochugaru: Standard red pepper flakes from a Western store are significantly hotter and seeds-heavy. If using regular chili flakes, cut the amount in half and pulse them briefly in a spice grinder.
• Gochujang: This ingredient is essential to the dish’s identity. Tubs are widely available on Amazon or in Asian food aisles. However, if you are stuck, a blend of 1.5 tablespoons sriracha, 1/2 tablespoon white miso paste, and 1/2 teaspoon brown sugar will mimic the heat and umami in an emergency.

How to Make It

1. Prepare the marinade: In a medium mixing bowl, whisk together the gochujang, gochugaru, soy sauce, mirin, toasted sesame oil, honey, grated pear, minced garlic, and grated ginger until smooth. Why: Mixing the sauce thoroughly first ensures the sugar and dense gochujang paste dissolve completely so every piece of pork receives uniform seasoning.
2. Marinate the pork belly: Lay the pork belly slices in a shallow dish or zip-top bag. Pour three-quarters of the marinade over the pork, reserving one-quarter for cooking later. Rub the marinade into the meat with gloved hands. Toss in the sliced yellow onion. Let it rest at room temperature for 20 minutes, or refrigerate for up to 4 hours. Why: The natural enzymes in the pear and ginger need time to soften the meat tissue, while the aromatics penetrate the fat layers.
3. Pre-render the pork belly: Heat a wide, heavy-bottomed skillet or cast-iron pan over medium-high heat. Place the marinated pork belly slices in a single layer without overcrowding the pan. Cook for 2 to 3 minutes until the underside turns golden and begins to release its fat. Why: Pork belly holds substantial moisture and fat. Rendering some fat early prevents the meat from boiling in its own juices and allows the protein to brown properly.
4. Add vegetables and reserved sauce: Turn the heat down to medium. Flip the pork strips over, add the marinated yellow onions, and spoon in the remaining reserved marinade. Cook for another 3 to 4 minutes, stirring constantly as the sauce bubbles. Why: Gochujang contains high levels of sugar that burn instantly above medium heat. Lowering the heat lets the sauce reduce into a sticky, glossy glaze that clings to the pork rather than turning black and bitter.
5. Flash-char and finish: Throw in the green onions and sliced chili peppers. Turn the heat up to high for the final 45 to 60 seconds, tossing continuously until the green onions wilt and small charred spots form on the edges of the pork belly. Remove from heat immediately, transfer to a platter, and sprinkle with toasted sesame seeds. Why: A brief blast of high heat at the very end recreates the signature charcoal-kissed flavor of Korean restaurant BBQ without scorching the entire dish.

Tips from a Korean Kitchen

Here are traditional techniques home cooks in Seoul rely on for perfect spicy pork belly:

• Freeze the pork briefly before slicing: If you purchase a whole slab of pork belly, place it in the freezer for 30 to 45 minutes until firm but not frozen solid. This makes cutting clean, uniform 1/4-inch slices effortless.
• Use heavy cast iron or carbon steel: Thin aluminum pans drop temperature rapidly when meat hits the surface, causing the pork to steam instead of sear. Cast iron retains heat evenly and yields superior char marks.
• Serve with fresh wrap ingredients: In Korea, we rarely eat gochujang samgyeopsal plain. Serve it with crisp red leaf lettuce, fresh kkaennip (perilla leaves), sliced raw garlic, and a dab of ssamjang (seasoned soybean paste). Wrapping the spicy, rich pork in a cold leaf balances the heavy fat and cools down the spice.
• Don’t skip the ginger: Pork fat can feel heavy on the palate. Freshly grated ginger cuts through the richness and cleanses the palate between bites.

Storage

Leftover cooked gochujang samgyeopsal keeps well in an airtight container in the refrigerator for up to 3 days. To reheat, warm a skillet over low heat with a teaspoon of water or oil, tossing until heated through. Avoid microwaving on high power, as it causes the pork fat to pop violently and renders the meat chewy. You can also freeze raw marinated pork belly in a freezer-safe bag for up to 1 month; thaw overnight in the fridge before cooking as directed.

FAQ

Can I make gochujang samgyeopsal on an outdoor grill?

Yes, but use an iron griddle or foil packet over the grates. Dripping pork fat onto open flames causes flare-ups, which instantly blacken the sugary gochujang marinade and create an acrid flavor.

Why did my marinade burn before the pork was cooked through?

This usually happens if the skillet heat was too high or the pork belly was cut too thick. Stick to 1/4-inch thick slices, keep your heat at medium while cooking the sauce, and save high heat only for the final 30-second flash-char.

Is gochujang samgyeopsal extremely spicy?

It has a warm, medium kick, but it is sweeter and milder than dishes like spicy fire chicken (buldak). If you prefer a milder version, reduce the gochugaru to 1 teaspoon and add an extra teaspoon of honey or pear juice to smooth out the heat.

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• Janchi Guksu (잔치국수): The Comforting Korean Party Noodle Soup Recipe
• Bibim Guksu Recipe: Spicy Cold Noodles for Sizzling Summer Days (비빔국수)
• Gochujang Glazed Chicken Thighs (고추장 닭갈비) One-Pan
• Our Family’s Best Dakgangjeong (Sweet Crispy Chicken Bites) Recipe