Ingredients

  • 4 crosscut marrowbones, each about 6 inches (15 cm) long
  • Salt and pepper
  • 3 tablespoons unsalted butter
  • 1/2 cup (45 g) or 6 slices diced bacon
  • 1/3 cup (50 g) diced onion
  • 1/3 cup (55 g) diced, peeled potatoes (Yukon Gold or fingerling)
  • 1/3 cup (55 g) diced carrots
  • 1/3 cup (25 g) diced cabbage
  • 1/3 cup (45 g) tiny cauliflower florets
  • 1/3 cup (25 g) chopped leek, white part only
  • 1/3 cup (55 g) diced white turnip
  • 1/3 cup (45 g) diced zucchini
  • 6 sugar snap peas, thinly sliced on the diagonal
  • 2 sprigs thyme
  • 2 cups (500 ml) chicken stock
  • 1 teaspoon cider vinegar
  • 1 tablespoon Dijon mustard, plus more for serving
  • Canola oil for searing
  • 1 clove garlic, smashed
  • Fresh flat-leaf parsley leaves for garnish
  • Italian bread, as much as you want
  • Sea salt for serving

Method

  • When you get the marrowbones home, put them in a big bowl with water to cover and 2 tablespoons salt.
  • They should sit refrigerated for a minimum of 4 hours or as long as overnight.
  • To prepare the vegetables, place a cast-iron pot over medium heat and add 2 tablespoons of the butter.
  • Once it starts to bubble, add the bacon.
  • Let the bacon crisp up for 2 minutes, and then add the onion.
  • Let the onion cook for a couple of minutes, stirring now and again, and then bomb the rest of the vegetables in except for the zucchini and snap peas.
  • Cook the vegetables for about 5 minutes, stirring occasionally.
  • Base the cooking on the potatoes, as they will taste the worst if they are not cooked through.
  • In the last minute of cooking, add the zucchini and snap peas.
  • Add 1 teaspoon salt, 1 thyme sprig, and a pinch of pepper to the pot, then pour in the stock and bring to a boil.
  • Cook for 2 minutes and add the vinegar.
  • At the last minute, add the remaining tablespoon of butter and the mustard, mixing well.
  • Season with salt and pepper and set aside over very low heat.
  • Now for the bones.
  • Preheat the oven to 425F (220C).
  • Drain the bones and pat them dry.
  • Put a large ovenproof pan over high heat.
  • Pour in a thin film of canola oil, and add the garlic and the remaining 1 thyme sprig.
  • Cook, stirring, for 1 minute.
  • Add the bones, marrow side down, and sear for 2 minutes.
  • You are not looking for color, just a bit of heat penetration.
  • Flip the bones marrow side up and put the pan into the oven.
  • Roast for 12 minutes.
  • We suggest using a thermometer to check the core of the marrow for doneness.
  • It should register 140F (60C).
  • A knife should penetrate the marrow easily.
  • If the bones wobble and tip over, loosely crumble a sheet of foil and nestle them for sturdiness.
  • Take the bones out of the oven and place 1 or 2 bones, cut end up, in each shallow soup bowl.
  • Divide the vegetable mixture among the bowls.
  • Garnish with the parsley.
  • Serve with the bread, mustard, and sea salt.