Instructions
- Preheat oven to 325F (160C).
- Season the lamb shanks with salt and pepper.
- Heat sunflower oil in a large Dutch oven or oven-safe pot over medium-high heat. Sear the lamb shanks on all sides until browned. Remove shanks and set aside.
- Add onion, carrots, and celery to the pot and cook until softened, about 5-7 minutes. Add cloves and bay leaves, cook another minute, until fragrant.
- Stir in the smoked paprika, ancho chile powder, oregano, cumin, and cayenne pepper (if using) until fragrant, about 30 seconds.
- Deglaze the pot with red wine, scraping up any browned bits from the bottom. Let the wine reduce slightly, about 2-3 minutes.
- Add the chicken broth and diced fire-roasted tomatoes. Bring to a simmer.
- Return the lamb shanks to the pot, ensuring they are mostly submerged in the liquid. Bring to a gentle simmer, then cover the pot.
- Transfer the pot to the preheated oven and braise for 3 hours, or until the lamb shanks are very tender and easily pull away from the bone.
- While the lamb shanks are braising, prepare the polenta verde. Bring chicken broth to a boil in a large pot. Gradually whisk in the polenta, stirring constantly to avoid lumps.
- Reduce heat to low and simmer, stirring frequently, for about 30 minutes, or until the polenta is thick and creamy. Season with salt and pepper.
- While the polenta is simmering, heat canola oil in a small saute pan over medium heat. Add spinach, basil, and parsley. Saute until wilted, about 2 minutes.
- Transfer the spinach-herb mixture to a food processor and pulse until finely chopped. Add dry vermouth to the warm pan you used for the herbs and simmer until reduced to just a thin coating, about 3 minutes.
- Stir the herb puree and reduced vermouth into the polenta. Cook for another 2 minutes, stirring constantly.
- To serve, spoon the polenta verde into bowls. Top with a braised lamb shank, ladle some of the braising liquid over the lamb, and garnish with crumbled queso fresco and chopped cilantro.