Ingredients
Method
Prepare and brown the oxtail
- Pat the oxtail sections dry with paper towels. Season all sides with salt and cracked black pepper.
- Heat the olive oil in a large Dutch oven over high heat. Add the oxtail in batches without crowding and sear for 3-4 minutes per side until deeply browned. Transfer to a plate and set aside.
- Reduce heat to medium. Add the guanciale to the same pot and cook for 2-3 minutes until the fat begins to render.
Build the soffritto
- Add the chopped onion, 2 finely chopped celery stalks, and carrot to the pot. Cook over medium heat for 8-10 minutes, stirring occasionally, until the vegetables are soft and pale golden.
- Add the sliced garlic and cook for 1 minute until fragrant.
- Stir in the tomato paste and cook for 2 minutes until it darkens slightly.
Deglaze and assemble the braise
- Pour in the white wine and scrape up any browned bits from the bottom of the pot. Simmer for 2-3 minutes until the wine reduces by half.
- Add the crushed tomatoes, beef stock, bay leaves, and whole cloves. Stir to combine.
- Return the browned oxtail pieces to the pot, pressing them down so they are mostly submerged in the liquid.
- Bring to a gentle simmer, then cover the pot and transfer to an oven preheated to 160 C / 320 F.
Slow braise
- Braise covered for 2 hours. After the first 90 minutes, skim any excess fat from the surface with a ladle.
- Check the liquid level - if it looks very thick or dry, add a splash of water or stock.
Add the agrodolce finish
- After 2 hours, add the reserved celery pieces, drained raisins, and toasted pine nuts to the pot.
- Stir in the cocoa powder (or grated dark chocolate). Taste and adjust salt.
- Return the pot to the oven, uncovered, for a further 30 minutes until the sauce has reduced slightly and the celery is tender but not mushy.
Rest and serve
- Remove the pot from the oven. Discard the bay leaves and whole cloves.
- Let the dish rest uncovered for 20 minutes before serving. The sauce will tighten as it cools slightly.
- Serve over rigatoni or polenta, spooning the sauce generously over the top.
Notes
If you cook this a day ahead, refrigerate the whole pot and skim the solidified fat cap from the top before reheating - the sauce will be noticeably deeper in flavor.
