In an oven-proof saucepan, heat the oil and brown meat for 2 minutes on each side. Set aside.
Using the same saucepan, sauté onion and garlic for 2 minutes. Deglaze with beer and allow liquid to reduce by half on high heat, about 2 minutes. Reduce heat and add remaining osso buco ingredients. Mix well. Add pork then cover and bake at 375 ºF for 2 hours or until meat is tender and falling off the bone.
Combine gremolata ingredients and serve with the meat.