Pork Osso Buco

Step 1
Season pork shank with salt and pepper.

Step 2
Heat olive oil and butter in a heavy pot over high heat. Sear pork shanks in hot butter-oil mixture until browned, 3 to 4 minutes per side. Transfer to a plate and set aside.

Step 3
Cook and stir onion, celery, carrot, and salt in the same pot over medium heat until onion turns translucent. Add tomato paste; cook and stir until tomato starts to caramelize, about 2 minutes. Sprinkle in flour; stir for 2 minutes. Pour in wine, increase heat to medium-high, and simmer until sauce reduces slightly.

Step 4
Add bay leaf, thyme, rosemary, and cloves. Pour in chicken broth and bring to a simmer. Return pork shanks to the pot along with any accumulated juices on the plate. Cover and cook at a very low simmer until meat is fork tender, 3 to 3 1/2 hours.

Step 5
Serve pork shanks with plenty of sauce, garnished with parsley and lemon zest.