Korean bbq flank steak sears fast in a sweet-savory gochujang soy marinade; slice thin across the grain for tender bites.
Craving that glossy, char-kissed meat you get at a Korean grill? This Korean bbq flank steak gives you that same balance of sweet, salty, spicy, and smoky at home. Flank is lean, well-marbled in fine strands, and built for a hot sear. With a smart marinade and a quick cook, you’ll get juicy slices that pile perfectly into lettuce wraps or over rice.
Why Flank Works For Korean Barbecue
Flank steak is long and flat with visible grain. That shape takes on marinade fast, and the fibers relax when you cut thin across the grain after resting. You’ll taste beef first, then the glaze from gochujang, soy, garlic, ginger, and toasted sesame. The result: deep flavor without a long cook.
Korean Bbq Flank Steak: Marinade And Timing
Here’s the game plan: whisk a bold marinade, coat the meat, chill just long enough to season through, then get it ripping hot on a grill or skillet. This keeps the surface lacquered and the middle rosy, not steamed.
Quick Marinade Blueprint
Use this base for 1–1¼ pounds flank:
| Ingredient | Role | Swap Options |
|---|---|---|
| Soy Sauce | Salt, umami, browning | Tamari or low-sodium soy |
| Gochujang | Heat, gentle sweetness, body | Gochujang + splash rice vinegar to thin |
| Brown Sugar | Caramelization, balance | Honey or rice syrup |
| Korean/Asian Pear (grated) | Enzymes for tenderness, subtle fruit | Grated apple or a touch of pineapple juice |
| Garlic & Ginger | Aromatics, warmth | Garlic-ginger paste |
| Toasted Sesame Oil | Nuttiness, sheen | Skip if unavailable; finish with sesame seeds |
| Rice Vinegar | Lift and brightness | Lime juice |
| Scallions | Fresh allium snap | Chives |
| Black Pepper | Gentle heat, aroma | White pepper |
Mix, Coat, And Chill
- Trim silver skin. Pat the flank dry. Light cross-hatch the surface with shallow cuts to help the marinade cling.
- Whisk marinade: 6 tbsp soy sauce, 2 tbsp gochujang, 1½ tbsp brown sugar, ½ cup grated Asian pear, 3 cloves minced garlic, 1 tsp minced ginger, 1 tbsp rice vinegar, 1 tbsp toasted sesame oil, 2 sliced scallions, ½ tsp pepper.
- Toss steak in a zip bag with the marinade. Press out air. Chill 45–120 minutes. Longer can over-soften the surface when pear is used.
Korean Barbecue Flank Steak On Grill Or Pan
Heat is your friend here. You want a deep sear and a glossy glaze without drying the meat. Work in batches if using a skillet to keep the heat high.
Grill Method
- Preheat a gas grill on high or build a hot charcoal zone. Clean and oil grates.
- Shake off excess marinade. Grill 3–4 minutes per side for medium-rare on a 1-inch piece, moving only to flip. Brush a spoonful of fresh marinade during the last minute for shine.
- Move to a cool spot if flare-ups jump. Rest 5–10 minutes on a board, tented.
Skillet Method
- Heat a heavy skillet over medium-high until faintly smoking. Add a thin film of neutral oil.
- Lay the steak flat. Sear 3–4 minutes. Flip and sear 2–3 minutes more. Spoon a tablespoon of marinade toward the end for a lacquered finish.
- Rest 5–10 minutes before slicing.
Safe Temps And Doneness
For steak, the USDA safe temperature chart lists 145°F (62.8°C) followed by a 3-minute rest for beef steaks. If you prefer pinker slices, know that flavor and texture shift as you cook warmer; rest time still matters for juices and tenderness.
Slice Across The Grain Like This
Place the steak with the long fibers running left-to-right. Tilt the knife 30° and slice thin, across the grain. That shortens the fibers so every bite feels tender. If the piece is thick, cut the slab in half with the grain first, then angle-slice each half.
Doneness And Texture Guide
These ranges reflect typical results on a 1-inch flank after a hot sear and a brief rest.
| Target Temp | Texture & Color | Timing Guide* |
|---|---|---|
| 125–130°F | Deep pink/red, very juicy | ~3 min/side; thinner pieces cook faster |
| 130–135°F | Rosy, springy, balanced chew | ~3–4 min/side |
| 135–140°F | Light pink, firmer bite | ~4 min/side |
| 145°F+ (USDA) | Mostly brown, juices set | ~4–5 min/side; rest 3+ min |
*Times vary with pan material, grill heat, steak thickness, and wind. Use an instant-read thermometer for best accuracy.
Make It A Meal
Lettuce Wraps (Ssam)
Set out butter lettuce or perilla, steamed rice, kimchi, sliced cucumber, and a bowl of ssamjang. Add thin slices of meat, a dab of paste, a seed or two of toasted sesame, and fold. That bite carries sweet heat from gochujang, crunch from veg, and char from the sear.
Rice Bowls
Spoon hot rice into bowls, fan sliced steak over the top, drizzle any resting juices, and finish with scallions and a few drops of sesame oil. Add a jammy egg or a sheet of toasted seaweed for texture.
Weeknight Tacos
Warm tortillas, pile on sliced steak, pickled onions, cucumber matchsticks, and a quick gochujang-mayo. Not traditional, still delicious.
Swaps, Shortcuts, And Fixes
No Asian Pear?
Use grated apple. It’s mild and adds the same tenderizing boost. A splash of pineapple juice works, but keep the marinade window short (about 45 minutes) so the surface doesn’t go mushy.
Heat Level
Gochujang comes in heat levels from mild to hot. Start with 2 tablespoons; add more if you like a stronger kick. You can also whisk in a pinch of gochugaru for a cleaner chili note.
No Grill?
A preheated cast-iron skillet gives great crust. Vent the kitchen and avoid crowding so the meat sears rather than steams.
Too Salty Or Too Sweet?
Thin the marinade with a tablespoon of water and a touch more vinegar before the next batch. For a quick save on the plate, add extra scallions and a few cucumber slices to balance.
Dry Outcome?
Pull the meat earlier and rest longer. Slice thinner across the grain. Keep the pan blazing hot to shorten the cook time.
Nutrition Snapshot And Sodium Tips
Flank is a lean cut with solid protein. Per 100 g raw, flank steak shows roughly 21 g protein with 6–8 g fat depending on grade, based on the USDA retail beef data tables for select and choice flank. See the USDA retail beef data for flank steak for full nutrient listings.
Most sodium in korean bbq flank steak comes from soy sauce and gochujang. If you’re watching sodium, use low-sodium soy, thin the paste with rice vinegar and water, and finish with sesame seeds and scallions for flavor lift instead of more salt.
Food Safety, Storage, And Reheat
Cook to your preferred doneness while keeping the USDA guidance in mind, then rest the meat before slicing. Chill leftovers within 2 hours, store in shallow containers, and reheat gently so the slices don’t dry out. The USDA’s leftovers page lays out good practices on cooling and storage. See leftovers and food safety.
Make-Ahead And Batch Cooking
Marinate the steak in the morning and cook at dinner; two hours in the chill is plenty with grated pear. To batch, grill two flanks side by side, rest both, and slice what you need. Keep extra slices for bowls and wraps over the next two days.
Flavor Add-Ons That Play Well
- Extra sesame: Sprinkle toasted seeds right after slicing so they stick to the warm glaze.
- Sweet-heat glaze: Warm 1 tbsp gochujang with 1 tsp honey and 1 tsp water; brush in the last minute of cooking.
- Crunch: Add quick-pickled radish or carrot to cut the richness.
What Makes This “Korean Bbq Flank Steak” Work
It’s the trio of fast marinade, hot sear, and thin slicing. The marinade carries gochujang’s depth and pear’s tenderizing power. The hot sear builds a lacquer without overcooking. The slice across the grain turns a lean cut into tender bites that soak up their own juices.
Gochujang Notes
Gochujang is a thick, fermented chili paste that adds both heat and umami. You’ll see versions labeled mild through extra hot. Look for tubs in the international aisle or at Korean groceries; once opened, it keeps well in the fridge.
Serving Ideas For A Crowd
Fan the sliced steak on a platter, scatter scallions and sesame seeds, and set out lettuce, rice, and an array of banchan. A pot of steamed rice and a crisp salad with cucumber and sesame dressing round it out. Keep extra sauce on the side by simmering any remaining marinade for 2–3 minutes until glossy before serving (use fresh marinade; never serve raw marinade).
Final Tips
- Dry the surface well before searing for better browning.
- Hold back a spoonful of marinade to brush in the last minute for shine.
- Rest, then slice thin on an angle across the grain. That step changes everything.
