In a food processor fitted with a blade, process pork through black pepper, with light pulses, scraping down sides of processor bowl until blended. Mixture should still retain some texture. Pork balls can be made by hand in a bowl, just finely mince all ingredients by hand before combining with minced pork.
Form pork into balls, about 1 Tablespoon of pork for cocktail sized pork balls, or about 3 Tablespoons for larger, "meatball" sized portions. For burgers, allow approximately 4-5 ounces per portion.
Pre-heat oven to 400 degrees F. Place on parchment lined baking sheets about 2 inches apart and bake for 15 to 20 minutes depending on size. Pork balls should be cooked through.
For sweet and sour sauce, heat apricot jam, water, ginger and chili sauce in a small sauce pan over low heat, stirring until combined and warm. Add more water if necessary to thin to desired consistency.