- Preheat your oven to 350°F. 
- Season the lamb shanks with sea salt and freshly ground black pepper. 
- In a large ovenproof pot, heat the olive oil over medium-high heat. 
- Add the lamb shanks and brown them on all sides. This should take about 10 minutes. 
- Remove the lamb shanks and set them aside. 
- In the same pot, add the onions and garlic, cooking until softened. This takes around 5 minutes. 
- Add the ground coriander, cumin, and cinnamon. Cook for another 2 minutes until fragrant. 
- Pour in the tomatoes, chicken broth, and red wine. 
- Return the lamb shanks to the pot and add the raisins and dried red chilies. 
- Bring the mixture to a boil, then cover the pot and transfer it to the oven. 
- Cook for about 2 hours, or until the lamb is very tender.