Crispy Roasted Pork Belly: Vietnamese  (Thịt Heo Quay) Style

If one dish signifies a celebration in a Vietnamese household, it is Thịt Heo Quay. Seeing a massive, mahogany slab of roasted pork belly on the table meant something big was happening—a wedding, a Lunar New Year feast, or a major family milestone. It’s the kind of meal that stops the room the moment it’s brought out.

Growing up, we only enjoyed this crispy roasted pork belly at large gatherings. But today, with a few modern hacks and the power of the air fryer, it’s easier than ever to bring that signature crunch and succulent flavor to your dinner table any night of the week.

What is Thịt Heo Quay and Bánh Hỏi?

Thịt Heo Quay is Vietnamese-style roasted pork belly. While it shares roots with Cantonese Siu Yuk, the Vietnamese version is distinguished by its marinade—a fragrant blend of five-spice, aromatics, and a hint of sweetness from paprika.

Traditionally, it is the centerpiece of a larger spread. While you can enjoy it with steamed rice or in a Bánh Mì, its most “elegant” pairing is with Bánh Hỏi—delicate, woven bundles of fine rice vermicelli. Think of Bánh Hỏi as the “lace” that balances the “steel” of the heavy, crispy pork. Together, they create the texture-rich wrap that is the hallmark of Vietnamese banquet dining.

The Story Behind the Pairing

The name Bánh Hỏi is a conversation starter. In Vietnamese, Hỏi means “to ask.” While many believe the name comes from people constantly asking what these beautiful noodles were, the real story is rooted in Southern Vietnamese tradition.

In the South, Bánh Hỏi and roasted pork belly are the stars of the Đám Hỏi (engagement ceremony). When a groom’s family visits the bride’s home to officially “ask” for her hand, they bring a ceremonial gift tray of these noodles. The food itself was the “social media” of the time—sharing the pork and noodles with relatives was the official way to announce a new union.

Things to Know Before You Start

• The Overnight “Fridge Dry” (Non-Negotiable): To get that restaurant-level crunch, moisture is your enemy. After puncturing the skin, I apply vinegar and sea salt. Leaving it uncovered in the fridge overnight allows the moisture to be drawn out until the skin is bone-dry. This is the only way to get those tiny, honeycomb bubbles that “pop” when they hit the heat. Skip this step and you’ll end up with hard, leathery skin instead of a crispy crackling.
• The “Foil Boat” Hack: This is my favorite trick for both the air fryer and oven. By placing the pork in a foil boat, you protect the succulent meat from drying out while allowing the intense heat to focus entirely on the skin.
• The Air Fryer Advantage: The air fryer is essentially a high-powered convection oven. Because the heating element is so close to the pork, it creates a more even, reliable “pop” than a traditional broiler might.

Ingredients & Substitutions

The Pork

• Pork Belly: Choose a slab that is flat and even. A lopsided piece will roast unevenly. For most standard air fryers, a 1.5lb to 2lb slab fits perfectly.
• The Rub: A blend of Salt, Five-Spice, and Sweet Paprika. (Avoid smoked paprika, as it alters the traditional Vietnamese flavor profile).
• Skin Treatment: White vinegar and coarse sea salt.

The Side (Bánh Hỏi)

• Dried Woven Bundles: I recommend The Bamboo Tree brand.
• Scallion Oil (Mỡ Hành): The essential “sauce” for the noodles.
• Herbs & Vegetables: No Thịt Heo Quay is complete without a crowded spread of crisp green leaf lettuce, crunchy cucumber spears, and plenty of Tía Tô (Perilla) and Húng Lủi (Spearmint). That bright, peppery hit of the mint is exactly what you need to cut through the richness of the roasted pork.
• Pickled Carrots & Daikon: Every bite of rich pork needs a hit of acidity, and my Đồ Chua—a bright, tangy mix of pickled carrots and daikon—provides the perfect refreshing snap to balance the savory five-spice.
• Dipping Sauce: To cut through the richness of the pork, I serve this with a generous side of Nước Mắm Chấm. My secret is a punchy, garlic-and-chili-forward blend that hits that perfect balance of salty, sour, and sweet.

Step-by-Step Instructions

1. The Prep: The Science of the Crunch

• The Puncture: Using a meat tenderizer or a bundle of bamboo skewers, puncture thousands of tiny holes only into the skin. Crucial Tip: Do not pierce through to the meat. If juices leak out, they will “steam” the skin from the inside, preventing that crisp texture.
• The Meat Side: Flip the pork over. Score the meat in a 1-inch diamond pattern (about 1/2 inch deep). Rub your Blend (salt, five-spice, and sweet paprika) thoroughly into the meat and crevices.
• The Skin Side: Flip it back over. Wipe the skin perfectly clean. Brush a thin layer of white vinegar across the skin to break down the proteins, then cover the surface with a thick layer of coarse sea salt.
• The 30-Minute Draw: Let it sit at room temperature for 30 minutes to draw out surface moisture.
• The Overnight Dry: Wipe the salt and moisture away completely. Place the slab on a plate, skin-side up, and leave it uncovered in the fridge overnight.

2. The Roast: Air Fryer Method (Primary)

• Build the Boat: Fold heavy-duty aluminum foil up around the sides of the pork belly, creating a snug “boat” that leaves the skin exposed but covers the meat.
• Phase 1 (The Render): Place the boat in the air fryer basket. Roast at 380°F for 30–40 minutes (depending on your Air Fryer). This cooks the meat and renders the fat slowly.
• Phase 2 (The Pop): Increase the heat to 400°F (or your Air Fryer’s highest setting). Roast for another 10 minutes. Watch through the window as the skin blisters into a golden honeycomb.
• The Scrape Test: Run a knife across the skin. If it sounds like a sharp “zipper,” it’s done!
• Rest & Chop: Let the roasted pork belly rest on a wire rack for 15 minutes. Then chop it with a cleaver into small, bite-sized pieces.

3. The Roast: Oven/Broiler Method (Secondary)

• The Setup: Place your foil boat on a wire rack inside a baking sheet.
• Phase 1: Roast at 350°F for 1 hour.
• Phase 2 (The Pop): Crank the oven to 550°F (High Broil). Watch closely for 15–20 minutes until fully blistered.

4. The Side: The “Steam-Residual” Bánh Hỏi

• The Flash Steam: Place dried Bánh Hỏi bundles in a flat steamer tray submerged into a boiling wok. Steam for exactly 1 minute and 15 seconds.
• The Roll: Take them out immediately. They will feel firm—this is perfect!
• The Finish: Roll them into “cigars” right away. The residual steam trapped inside the roll finishes the cooking in 2 minutes. Brush with Mỡ Hành to lock in moisture.

Tips for Success and Mistakes to Avoid

• DON’T Puncture too deep: If your needle hits the meat, juices will stain the skin with black spots and prevent a full crisp.
• DO Level your pork: If your slab is lopsided, use a small ball of crumpled foil under the “short” side to prop it up so the skin is perfectly level with the air fryer heating element.
• DON’T Slice immediately: Wait at least 20 minutes! If you cut it while piping hot, the steam will soften your crispy skin.

Serving & Storage

• Serving: Slice with a heavy cleaver. Serve on banana leaves with Bánh Hỏi “cigars,” fresh herbs (Mint, Perilla, Thai Basil), cucumber, and Nước Chấm.
• Reheating: Never use a microwave! To bring back the crunch, place slices in the Air Fryer at 375°F for 3–5 minutes.

FAQs

Q: Can I do this entirely in the Air Fryer? A: Yes! It is actually my preferred modern method. It is faster and often results in a more even crackling for smaller family-sized portions.

Q: Why does my Bánh Hỏi feel hard when I first take it out? A: That 10-second flash steam just “activates” them. The real cooking happens as you roll them; the heat trapped inside the “cigar” finishes the hydration perfectly.

Looking for more ways to use this cut? If you love these flavors, you have to try my Thịt Kho Tộ (Vietnamese Caramelized Braised Pork Belly)—it’s the ultimate sweet and savory comfort food.

5 from 3 votes

Vietnamese Crispy Roasted Pork Belly (Thịt Heo Quay)

This is the modern method for achieving a shatteringly crisp, bubbly golden skin and succulent, five-spice infused meat. By using the Foil Boat technique and a overnight fridge dry, you can skip the specialized roasting equipment and get restaurant-quality results in your home oven.

Servings 6

Prep Time 45 minutes mins

Cook Time 1 hour hr 20 minutes mins

Drying time 12 hours hrs

Equipment

• Meat Tenderizer Tool
• Chef's knife
• Cutting board
• Air fryer (alternative to Oven)
• Foil
• Noodle pot

Ingredients

The Star

• 2 –3 lbs Pork Belly even, flat slab
• 1 tsp Five-Spice Powder
• 1 tsp Sweet Paprika for that “Hero” mahogany color
• 1 tsp Fine Sea Salt

The Skin Treatment

• 1 tbsp White Vinegar
• 2 tbsp Coarse Sea Salt for the initial moisture draw

The Bánh Hỏi & Garnish

• 1 pack Dried Bánh Hỏi Bamboo Tree Brand
• 2 tbsp Scallion Oil Mỡ Hành
• Fresh Vegetables & Herbs Lettuce, Cucumber, Mint, Perilla
• Pickled Carrots & Daikon
• Thawed Banana Leaves for the platter

Instructions

• Puncture & Prep: Pat the pork belly bone-dry with paper towels. Using a meat tenderizer or skewers, puncture thousands of tiny holes only into the skin. Do not hit the meat!
• Score the Meat: Flip the pork over. Score the meat side in a 1-inch diamond pattern, about 1/2 inch deep.
• Marinate: Rub the Five-Spice, Paprika, and fine salt thoroughly into the meat side and scored crevices.
• The Salt Shield: Flip back and wipe the skin perfectly clean. Brush with vinegar, cover with a thick layer of coarse sea salt, and let sit for 30 minutes at room temperature.
• The Cold Dry: Wipe the skin completely clean of salt and moisture. Place the slab on a plate, skin-side up, and leave it uncovered in the fridge for 24 hours.
• The Foil Boat: Preheat your Air Fryer to 380°F. Build a snug aluminum foil "boat" around the sides of the pork, leaving only the skin exposed.
• The First Roast: Place the boat into the Air Fryer basket. Roast for 30-40 minutes (depending on your air fryer) to render the fat and tenderize the meat.
• The High Broil: Crank the Air Fryer to 390°F. Watch closely for 10-15 minutes as the skin blisters into a golden, bubbly honeycomb.
• The Rest: Remove once the skin passes the "zipper" scrape test. Rest for 20 minutes before slicing with a heavy cleaver.
• The Noodles: Prepare the dried Bánh Hỏi by blanching for exactly 1 minute and 15 seconds. Remove and roll into "cigars" immediately; the residual steam will finish the cooking.
• Serve: Brush the noodles with Scallion Oil and arrange on banana leaves alongside the crispy pork slices, pickled carrots and daikon and fresh herbs. Serve with Nước Mắm Chấm.

Notes

• Level the Skin: If the pork slab is lopsided in the oven, use a small ball of crumpled foil to prop up the lower side. The skin must be level to the broiler to “pop” evenly.
• Air Fryer Alternative: You can do the final “Pop” stage in an Air Fryer at 400°F for 10–15 minutes if your broiler is inconsistent.
• Leftovers: Reheat slices in the Air Fryer at 375°F for 3–5 minutes to restore the crunch. Never microwave!

Course: Main Course

Cuisine: Vietnamese

Keyword: pork