1. Marinate the Lamb: In a small bowl, mix the olive oil, garlic, lemon juice, oregano, rosemary, thyme, cumin, salt, and black pepper. Rub the mixture all over the lamb shanks (or lamb shoulder) and place them in a shallow dish. Pour over the white wine (if using) and let the meat marinate for at least 1 hour, preferably overnight in the fridge for deeper flavor.

2. Prepare the Oven: Preheat the oven to 160°C (320°F). The key to Kleftiko is slow cooking, so make sure the temperature is low to ensure tender, juicy meat.

3. Prepare the Baking Dish: Lay out a large piece of parchment paper or foil in a roasting pan, enough to wrap the lamb securely. Add a layer of onion slices at the bottom, which will create a flavorful bed for the lamb. If you’re using potatoes, scatter them around the lamb or place them on top, adding some salt, pepper, and a bit of butter if desired.

4. Wrap the Lamb: After marinating, place the lamb in the center of the parchment or foil, along with the marinade. Tightly fold the parchment or foil around the lamb, sealing it to trap in the steam and juices. This slow-roasting method will make the lamb incredibly tender and flavorful.

5. Bake the Lamb: Place the wrapped lamb in the preheated oven and bake for 3 hours, or until the meat is fall-apart tender. Check halfway through and ensure the lamb is cooking evenly. You can add a bit more wine or water if it seems too dry.

6. Finishing Touches: After 3 hours, carefully unwrap the foil or parchment (be cautious of the hot steam). If you want the lamb to have a slightly crispy exterior, you can place it under the broiler for the last 10 minutes of cooking.

7. Serve: Once the lamb is done, remove it from the oven and let it rest for 10 minutes. Garnish with chopped parsley before serving. The lamb should be tender enough to pull apart with a fork.

Serving Suggestions:

• Serve the Lamb Kleftiko with roasted potatoes or vegetables (such as carrots and zucchini).
• Pair with a Greek salad made of cucumbers, tomatoes, olives, onions, and feta cheese.
• Add some pita bread or a side of rice to soak up the flavorful juices.
• You can also serve with a refreshing tzatziki sauce on the side.