Grilled Bone Marrow
|3 tbsp||vegetable oil|
|4-6 sections||of marrow bones, split lengthways, plus a small chunk of bone marrow|
|4||large sweet onions (about 1 kg), peeled and sliced|
|Smoked Maldon sea salt|
|Freshly ground black pepper|
Heat a couple of tablespoons of vegetable oil and a small chunk of bone marrow in a large heavy pan, add 4 finely sliced onions and, stirring regularly, cook low and slow for an hour or so, until brown, sweet and soft, before seasoning to taste. Lightly season the exposed side of 4 marrow bones that have been split lengthways (by your butcher) and bake in a hot oven (200°C/400°F/ Gas 6) for 6 to 8 minutes until the marrow is soft. Top the marrow with your slow cooked onions and place under the grill until lightly singed on top. Sprinkle with sea salt (smoked sea salt if you have it) and serve with toasted sourdough bread.