Try this Sweet and Sour Pot Roast recipe, or contribute your own.
Adding the vinegar and brown sugar too early in the cooking process prevents the collagen in the tough chuck and brisket cuts from breaking down properly into gelatin, leaving the meat stubbornly chewy instead of tender.
Impatience remains the primary reason this dish fails, often manifested by turning up the burner to accelerate softening. Allowing the meat to rest covered off the heat for fifteen minutes before slicing redistributes internal juices.