01Heat the oil in a large, heavy-bottom saucepan. Add the shanks and sear over medium heat until golden brown, about 5 minutes per side. Remove and set aside.
02Add the onion, garlic, celery root, carrots, olives and ginger. Lower the heat to medium and cook, stirring frequently, until the onions are translucent, about 5 minutes. Remove vegetables from pot and set aside.
03Add the wine, increase the heat to high and simmer until reduced to 1/2 cup, about 5 minutes.
04Add the remaining ingredients, except coriander leaves and parsley leaves. Stir to combine. Return the shanks and vegetables to the saucepan. Cover partly and simmer gently over medium-low heat until the meat begins to fall off the bone, about 3 hours.
05Meanwhile, combine the coriander and the parsley in a bowl. Set aside. Remove the bay leaf from the saucepan and discard. Season to taste with salt and pepper. Divide the shanks among 4 plates. Ladle the sauce over each shank. Garnish with the coriander-parsley mixture and serve immediately. Serve with white bean puree (recipe below).