Use a sharp knife to cut the pork belly into 1.5-inch wide strips, then again into square pieces. Transfer the pork pieces to a bowl, then pour the marinade over the pork, mixing to fully coat each piece.
1½ lbs. pork belly
Cover the bowl and set it in the refrigerator. Allow the pork to marinate for at least 30 minutes, up to 18 hours.
Preheat the air fryer to 400°F (204°C). Spray the basket lightly with oil to keep the pieces from sticking.
Cook for 18-22 minutes, stopping every 5 minutes to flip the pieces with a plastic-tipped spatula. This helps the pieces to cook evenly. Once the pork belly pieces are crispy on all sides, carefully transfer them to a plate and serve while warm.
Video
Notes
To absorb some of the rendered fat grease and decrease the chance of smoking, place a piece of bread in the bottom of the air fryer basket before cooking.
You can prep and marinate the pork belly pieces up to 18 hours in advance.
During cooking, stop every 5 minutes to flip the pork belly pieces inside the air fryer basket. This will help ensure the pieces are cooked evenly and crispy on all sides.
This recipe was created using a 6 qt. air fryer. Work in batches if you're cooking with a smaller air fryer or cooking larger quantities of pork belly.