Air Fryer Siu Yuk (Chinese Crispy Pork Belly)

That impossibly loud crunch when you bite into Cantonese roast pork belly? You’re about to make it in your air fryer — no commercial oven, no deep fryer, just shatteringly crisp crackling and juicy five-spice meat that’ll have your kitchen smelling like a Hong Kong BBQ shop.

If you’ve ever wandered through a Hong Kong cha siu shop and stared longingly at those glistening squares of pork belly with the impossibly crunchy skin, you already know the magic of Siu Yuk (烧肉). That signature blistered, shatter-when-you-bite crackling sitting on top of tender, five-spice-perfumed meat is the holy grail of Cantonese roast meats — and for years, home cooks assumed you needed a commercial oven or a specialty roaster to pull it off.

Not anymore. This Air Fryer Siu Yuk recipe delivers authentic Chinese crispy pork belly with crackling so loud you can hear it from the next room, using nothing more than the air fryer already sitting on your counter. No deep frying, no full-size oven heating up your kitchen for two hours, and no fancy equipment.

The secret is in the prep, the overnight dry, and a two-stage air frying method that mimics how Cantonese chefs roast siu yuk in traditional charcoal ovens. Once you nail it, you’ll never order takeout pork belly again.

What Is Siu Yuk?

Siu Yuk (烧肉, sometimes written as siu yook, shao rou, or simply “Chinese roast pork”) is one of the four pillars of Cantonese siu mei — the family of roasted meats that includes char siu, roast duck, and soy sauce chicken. Unlike sweet, red-glazed char siu, siu yuk is savory and unadorned, with the entire personality of the dish living in the contrast between the crispy puffed skin and the succulent layered pork belly beneath.

You’ll find it hanging in the windows of Cantonese BBQ shops from Guangzhou to San Francisco, typically chopped into bite-sized cubes and served over rice, alongside noodles, or as part of a larger meat platter. The skin should crackle audibly when you cut into it, and the layers of fat should be rendered down to silky ribbons that melt against the lean meat.

Why the Air Fryer Works So Well for Siu Yuk

Traditional siu yuk is roasted at high temperatures in a vertical charcoal oven, where intense, dry, circulating heat hits the skin from every direction. That’s almost exactly what an air fryer does — just on a smaller, more controllable scale. The compact basket traps heat efficiently, the powerful fan keeps hot air moving across the skin’s surface, and the precise temperature control lets you nail both the low-and-slow rendering phase and the high-heat puffing phase without babysitting an oven.

The result? Restaurant-quality crackling in about 70 minutes of cook time, with way less mess than deep frying and far better skin than a conventional oven typically delivers.

Ingredients You’ll Need

This recipe keeps the seasoning traditional and minimal — siu yuk isn’t about a complex marinade, it’s about technique.

• Pork belly: With skin on trimmed evenly for crispness
• Vinegar: Helps dry the skin for better crackling
• Sea salt: Creates crispy bubbly crackling on top
• Sugar: Balances the savory flavors with slight sweetness
• Five spice powder: Adds warm traditional Chinese flavor
• White pepper: Gives gentle heat and earthy flavor
• Garlic powder: Adds savory depth throughout the pork belly
• Hoisin sauce: Brings sweet salty umami rich flavor

Choosing the Right Pork Belly

The single most important ingredient decision you’ll make is picking the right slab of pork belly. Look for a piece that’s roughly 1.5 to 2 inches thick, with clearly visible layers of fat and lean meat (you want at least three distinct layers). The skin should be smooth, dry, and free of hair — give it a once-over and tweeze any stragglers. Ask your butcher for a piece with even thickness across the entire slab, because uneven thickness leads to uneven cooking and patchy crackling.

If you can find it, Berkshire or heritage breed pork belly will give you the best flavor, but a good supermarket piece will absolutely deliver.

Step-by-Step: How to Make Air Fryer Siu Yuk

Step 1: Prep and Scald the Skin

Pat the pork belly dry, then flip it skin-side up. Using a sharp fork, metal skewer, or a dedicated meat pricker, prick the skin all over — aggressively, hundreds of times. You want as many tiny holes as possible without piercing into the meat layer below. These micro-perforations are what allow steam and fat to escape during cooking, which is exactly what creates that puffed, bubbly crackling.

Bring about 4 cups (1 liter) of water to a rolling boil with the 2 tablespoons of vinegar. Place the pork belly skin-side up on a rack set over a tray or in your sink, and ladle the boiling vinegar water over the skin 8 to 10 times. You’ll see the skin tighten visibly and turn slightly pale — this scalding step tightens the collagen and kickstarts fat rendering before the pork ever sees the air fryer.

Pat the pork completely dry with paper towels. Don’t skip this — any surface moisture is the enemy of crispy skin.

Step 2: Score, Season, and Dry

Flip the pork over so the meat side faces up. Score only the meat side in a shallow crosshatch pattern — do not, under any circumstances, score the skin. (Scoring the skin lets fat escape upward and prevents the puff.)

In a small bowl, combine the hoisin sauce, sugar, garlic powder, sea salt, white pepper, and five-spice powder into a thick paste. Rub this marinade firmly into the meat side and around the edges only. Keep every speck off the skin.

Flip the pork back to skin-side up and sprinkle the 2 teaspoons of sea salt evenly across the skin. This salt layer draws out remaining moisture overnight and is one of the biggest secrets to next-level crackling.

Place the pork uncovered on a wire rack set over a plate or tray and refrigerate overnight, uncovered, for at least 12 hours — 24 hours is even better. The skin should feel completely dry, almost papery, when you take it out.

Step 3: First Air Fry — Low and Slow

Preheat your air fryer to 250°F (120°C). Before cooking, brush off any excess salt crystals from the skin (the salt has done its job — too much left on will over-season the final dish).

Build an open foil “box” around the pork belly: tear off a sheet of foil and fold it up around all four sides of the meat, leaving only the skin exposed at the top. This shields the meat and edges from drying out while the skin gets direct heat exposure.

Air fry at 250°F (120°C) for 30 minutes. This low-temperature phase finishes drying the skin and gently renders the top layer of fat — it’s the foundation for the dramatic puff that comes next.

Step 4: Second Air Fry — High Heat for the Crackling

Crank the air fryer up to 400°F (200°C) and continue cooking for 30 to 40 minutes. This is where the magic happens. You’ll see the skin start to bubble, then blister, then explode into that signature pebbled, cratered crackling.

Watch it closely after the 25-minute mark. Every air fryer runs slightly differently, and you don’t want the skin to burn. If it’s browning too fast, drop the temperature to 375°F (190°C) and let it finish more gently. The skin should be deep golden-amber, fully puffed, and rock-hard to the tap when it’s done.

Step 5: Rest and Slice

Rest the pork for 20 minutes before cutting. This is non-negotiable — slicing too early lets all those carefully rendered juices run out, and you’ll shatter the crackling instead of cleanly cutting through it.

Place the pork skin-side up on a cutting board. Using a sharp, heavy cleaver or chef’s knife, slice straight down through the skin in confident strokes — the crackling should crunch loudly. Cut into bite-sized squares, roughly 1 inch by 2 inches.

How to Serve Siu Yuk

Authentic Cantonese tradition serves siu yuk with one or more of these dipping sauces:

• Yellow mustard — the most traditional pairing, cutting through the richness of the fat
• Hoisin sauce — sweet and savory
• Plum sauce — tangy and fruity
• Ginger-scallion sauce — fresh, aromatic, and bright

For a complete meal, plate the pork over steamed jasmine rice, alongside blanched bok choy or gai lan with oyster sauce, and a bowl of clear broth. It also makes an incredible centerpiece for a homemade siu mei platter with char siu and roast duck.

Pro Tips for Perfect Crackling Every Time

After making this recipe more times than is probably reasonable, here are the details that separate good siu yuk from great siu yuk:

The overnight dry is non-negotiable. If you try to rush this step, the skin simply will not puff properly. The drier the skin going into the air fryer, the louder the crackle coming out.

Prick the skin more than you think you need to. Hundreds of tiny holes, not dozens. A dedicated meat pricker tool (available cheaply online) makes this much faster than a fork.

Keep marinade off the skin. Any sugar, sauce, or seasoning on the skin will burn black before the skin puffs. Salt only.

Even thickness equals even crackling. If your pork belly is thicker on one side, the thin side will cook faster and the thick side won’t render properly. Trim it flat before you start.

Don’t open the air fryer constantly. Every time you open it during the high-heat phase, you drop the temperature significantly and slow down the puffing reaction.

Troubleshooting Common Problems

My skin didn’t crackle — why? Almost always a moisture issue. Either the skin wasn’t dried thoroughly after scalding, the overnight dry wasn’t long enough, or you didn’t prick the skin enough.

The skin burned before puffing fully. Your air fryer runs hot. Next time, drop to 375°F (190°C) for the high-heat phase, or move the pork to a lower position in the basket.

The meat is dry. Either the pork belly was too lean to start with (look for fattier cuts), or the foil “box” wasn’t sealing in moisture during the low-temp phase. Make sure the foil wraps tightly around all four sides.

The skin is crispy in spots but rubbery in others. Uneven thickness in the pork belly, or salt wasn’t evenly distributed during the overnight dry.

Storage and Reheating

Leftover siu yuk keeps in an airtight container in the fridge for up to 3 days. To revive the crackling, reheat in the air fryer at 375°F (190°C) for 4 to 5 minutes — never the microwave, which will turn the crispy skin into chewy rubber.

For longer storage, you can freeze cooked siu yuk for up to 2 months. Thaw overnight in the fridge and re-crisp in the air fryer.

Frequently Asked Questions

Can I make Siu Yuk without an air fryer? Yes — traditional recipes use a conventional oven at 425°F (220°C) on the top rack. The air fryer just makes it faster and more reliable for home cooks.

Do I have to use hoisin sauce? The hoisin adds depth and a subtle sweetness to the meat layer, but you can leave it out for a more minimalist version. Some traditional recipes use only salt, sugar, and five-spice.

Why vinegar in the scalding water? The acid helps tighten the skin and slightly alters its pH, which contributes to better puffing during the high-heat phase.

Can I skip the overnight dry? Technically yes, but the results will be dramatically worse. If you must shortcut, dry the pork in front of a fan for at least 4 hours after scalding.

What size air fryer do I need? A 5-quart or larger basket-style air fryer comfortably fits a 2.2 lb slab. For smaller air fryers, cut the pork belly in half and cook in two batches.

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