Sweet and Sour Flanken

Name: Sweet and Sour Flanken
Ingredients: 3 -4 pounds lean, first cut flanken (also called top rib at a kosher butcher - which is basically short rib but cut across the bone), trimmed of large pieces of fat and cut between each piece of bone into bite sized pieces. Leave some meat attached to each bone, but; 1.5 pounds boneless flanken (top rib), trimmed of large pieces of fat and cut into bite sized pieces; 48 - 53 ounces strained tomatoes (I use either 2 jars of 24 oz. Bionaturae or 2 boxes of 26.46 Pomi). Either way I use two and throw about a half cup of water into the jars or boxes after emptying them into the pot, swish it around and add that too.; 1/4 cup sugar (I use natural cane sugar), more to taste; 1/4 cup fresh lemon juice, more to taste; 1 teaspoon salt, more to taste (since I use unsalted strained tomatoes, I generally do have to add a little more salt); fresh ground black pepper, to taste