- 1 pound cubed beef stew meat
 - 3 cups cold water
 - 3/4 cup vinegar
 - 9 tablespoons soy sauce
 - 9 tablespoons brown sugar
 - 5 tablespoons cornstarch
 
- Heat a deep skillet over medium heat. Cook and stir beef in hot skillet until completely browned, 7 to 10 minutes. Transfer beef to a slow cooker.
 - Whisk water, vinegar, soy sauce, brown sugar, and cornstarch together until smooth; pour over the beef.
 - Cook on Low until the beef is tender and the sauce is thick, 6 to 8 hours.