Ingredients and Preparation
- Combine vinegar, oil, and pork in a large plastic resealable bag, shake to coat, and marinate in the refrigerator 30 minutes to overnight, turning at least once.
- In a medium bowl, make sweet and sour sauce by whisking together ketchup, white vinegar, sugar, soy sauce, and salt. Set aside.
- Prepare grill. Alternate threading pork, pineapple, and red onion on skewers. Grill 8 minutes on each side, or until pork is cooked through but still tender.
- Drizzle kebabs with sweet and sour sauce and serve.