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1
Adjust oven rack to lower-middle position and preheat oven to 325u00b0F. Combine flour, 11/2 teaspoons salt and 1 teaspoon pepper in a large, shallow dish. Dredge short ribs in flour mixture, coating all sides and shaking off excess.
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2
Heat olive oil in a large Dutch oven over high heat until smoking. Brown short ribs two at a side, turning until well browned on all sides, about 8 minutes total per batch. Transfer seared ribs to a large plate.
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3
Add red wine to pan, scraping browned bits off the bottom with a wooden spoon. Bring to a boil and allow to simmer for a minute before adding tomatoes, Worcestershire sauce, red peppers, bay leaves, onion, orange zest, garlic and sugar. Return to a boil, cover, place in oven and braise until meat is tender, 2 1/2 to 3 hours, turning ribs half way through cooking. Season braising liquid to taste with salt and pepper.
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4
While the short ribs are cooking, combine the lemon zest, parsley, garlic, and pepper flakes. Season to taste with salt.
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5
When meat is finished, allow to rest for at least 10 minutes, or for better results, cool and reheat the next day. Discard bay leaves, onions, zest and garlic. Place short ribs on a platter, drizzle with braising liquid and top with a gentle shower of gremolata.
