A hallmark of Singapore's hawker heritage, this dish features sweet, meaty mud crab tossed through a sizzling wok with heaps of coarsely cracked black pepper, butter, and aromatics. The peppery, buttery sauce is rich enough to mop up with crispy fried mantou buns. It's messy, hands-on eating at its most rewarding.
Prep Time20 mins
Cook Time25 mins
Total Time45 mins
Servings4
Yield4 servings
Nutrition Facts
Per serving (estimated)
- 480 kcalCalories
- 28 gFat
- 14 gSaturated Fat
- 12 gCarbs
- 1 gFiber
- 3 gSugar
- 38 gProtein
- 920 mgSodium
- 720 mgPotassium
- 180 mgCalcium
- 2 mgIron
- 18 mgVitamin C
- 320 mcgVitamin A
Ingredients
For the Crab
- 2 live mud crabs (about 1.5–2 lb / 700–900 g each)
- 2 tbsp Shaoxing wine
- 2 cups water, for blanching
For the Black Pepper Sauce
- 6 tbsp (85 g) unsalted butter
- 3 tbsp coarsely cracked black peppercorns (adjust to taste)
- 8 garlic cloves, finely minced
- 2 inches fresh ginger, thinly sliced
- 4 shallots, finely minced
- 2 tbsp oyster sauce
- 1 tbsp dark soy sauce
- 1 tsp sugar
- 1/2 cup chicken stock
- 2 scallions, thinly sliced, for garnish
- Small handful fresh cilantro leaves, for garnish
Optional for Serving
- 4–6 store-bought mantou buns, steamed or pan-fried until golden
Directions
- Prepare the crabs: chill them in the freezer for 15 minutes to sedate, then scrub under cold running water. Twist off the top shells, discard the gills and stomach sac, rinse the bodies, and chop each crab into 4–6 pieces through the shell. Lightly crack the claws with the back of a heavy knife so the seasoning can penetrate.
- Bring a pot of water with 1 tbsp Shaoxing wine to a rolling boil. Blanch the crab pieces for 1–2 minutes until they turn bright orange, then drain and set aside. This step locks in juices and prevents a watery sauce later.
- Heat a large wok over high heat until smoking. Melt 4 tbsp of the butter, then add the cracked black pepper, garlic, ginger, and shallots. Stir-fry for about 30 seconds until fragrant but not browned.
- Add the blanched crab pieces and toss vigorously for 2 minutes to coat each piece in the pepper butter. Pour in the oyster sauce, dark soy sauce, sugar, and chicken stock, then bring to a vigorous boil.
- Reduce the heat to medium, cover the wok, and simmer for 6–8 minutes, flipping the crab pieces once, until the shells are deep red-orange and the meat is just cooked through.
- Uncover, raise the heat, and stir-fry for another 2–3 minutes to reduce the sauce until it thickly coats the back of a spoon. Stir in the remaining 2 tbsp butter for a glossy finish.
- Taste and adjust seasoning with extra cracked pepper or a pinch of salt. Scatter the sliced scallions and cilantro over the top, then transfer to a large platter and serve immediately with hot mantou buns on the side for soaking up the peppery butter sauce.
Cook’s Notes
- Always use freshly cracked whole peppercorns rather than pre-ground black pepper — the volatile oils are what give the dish its signature sharp, fragrant heat.
- Blanching the crab first prevents the meat from sticking to the shell and keeps the wok sauce thick and glossy instead of watery.
- Chilling crabs in the freezer for 15 minutes sedates them humanely and makes handling much safer; always wear thick kitchen gloves.
- If mud crabs are unavailable, Dungeness or whole blue swimmer crabs work well — just adjust cooking time based on size.
- Serve with plenty of napkins and a bucket for shells; this is a true hands-on, get-messy Singaporean feast.










