
This air fryer char siu delivers the glossy finish, sweet-savory flavor, and juicy texture of classic Chinese BBQ pork with less fuss than oven roasting. Pork shoulder is marinated overnight, then basted as it cooks for beautifully caramelized edges and tender slices perfect for rice, noodles, or bao.
Cut the pork shoulder into 2 to 3 large strips or chunks, about 2 to 3 inches thick. Keep the pieces as large as your air fryer allows so they stay juicy, and leave the fat on for better flavor and moisture.
In a large bowl, mix the sugar, salt, five-spice powder, white pepper, sesame oil, Shaoxing wine, soy sauce, hoisin sauce, molasses, red food coloring if using, and minced garlic until combined. Set aside about 2 tbsp of the marinade in a covered container and refrigerate it for basting later.
Add the pork to the remaining marinade and rub well to coat every surface. Cover and refrigerate for at least 8 hours or overnight for the best flavor.
Remove the pork from the refrigerator about 2 hours before cooking so it can lose some of its chill. This helps it cook more evenly.
Pour 1/4 cup hot water into the air fryer basket and place the rack over it. Arrange the pork on the rack in a single layer, leaving space between each piece.
Insert the basket and set the air fryer to 375°F. Cook the pork for 15 to 18 minutes total, turning and basting every 5 to 6 minutes.
While the pork cooks, stir the reserved marinade with the maltose and 1 tbsp hot water until smooth. After each cooking interval, lightly brush the pork with the glaze, flip, and brush the other side. If the water under the rack evaporates, carefully add a little more hot water.
The pork is ready when the exterior is glossy and lightly charred and the thickest part reaches a safe internal temperature of 145°F. Let it rest for 5 to 10 minutes, then slice and serve.
Maltose gives char siu its signature sticky glaze, but honey is a practical substitute if needed. Do not overcrowd the air fryer basket or the pork will steam instead of caramelize. Leftover char siu keeps well in the refrigerator for up to 4 days and is excellent in fried rice, noodle soups, and bao.