• Season both sides of the pork belly with salt and pepper. Line them in the air-fryer basket. 
• Push the air fryer button setting and set the temperature to 365 F. Set the timer to twenty minutes. Push the start button. If the liver and pork belly are not cooked after twenty minutes, add more cooking time until cooked through.
• Remove the pork belly and liver from the basket and chop them into small pieces.
• Heat the oil in a cooking pan and saute' the garlic and half of the onions. Cook until aromatic, and add the chopped meat. Add the soy sauce and vinegar. Let cook for three minutes. Turn off the heat and add the remaining chopped onion and chili pepper. Add more ground pepper for an extra kick. You can add salt if you want.

To Serve

• Transfer the pork belly sisig to a sizzling plate. Top with fried egg.