Charcoal-Seared Côte de Boeuf with Béarnaise Butter & Bone Marrow Toast
The most theatrical steak on the counter, cooked the only way it truly deserves — over live coals, rested patient, and sliced at the table.
June arrives in a blaze of early-summer warmth, and with it comes the irresistible pull of live fire. The côte de boeuf — French for “rib of beef” — is a bone-in ribeye of dramatic proportions: a thick, arching cutlet cleaved through the prime rib section, the long rib bone left in to protect the meat, baste it with its own rendered fat, and transform an already spectacular piece of beef into an undeniable centrepiece. The crust it takes on over glowing embers — burnished mahogany, deeply savoury, faintly smoky — is simply impossible to replicate on a domestic hob. This recipe pairs it with a make-ahead béarnaise butter and bone marrow roasted alongside on the same grill, piled onto char-grilled sourdough. It is a feast in the truest sense.
The côte de boeuf is cut from the prime rib section of the forequarter, between ribs six and twelve: typically 900g–1.2kg, cut to 5–7cm thick. It is one of the most generously marbled cuts on the animal. The intramuscular fat — fine white threads running through the ruby flesh — bastes from within as the steak cooks, carrying fat-soluble flavour compounds to every corner of the meat. This is what makes the rib section extraordinary, and why it is so perfectly suited to live fire.
When choosing, look for deep brick-red colour, a fat cap of at least 1cm with a creamy off-white hue, and marbling distributed through the meat rather than pooled at the edges. Our côte de boeuf is dry-aged for a minimum of 28 days from grass-fed cattle — available at 45 days for even greater concentration. Over those weeks, natural enzymes break down connective tissue for unparalleled tenderness, while moisture loss concentrates flavour into that characteristic mineral, nutty depth you simply don’t get from wet-aged beef.
- 1 grass-fed dry-aged côte de boeuf, approx. 1–1.2kg
- Maldon sea salt (use generously)
- Freshly cracked black pepper
- 1 tbsp beef dripping or light olive oil
- 125g unsalted butter, softened to room temperature
- 2 banana shallots, very finely diced
- 50ml dry white wine
- 1 tbsp white wine vinegar
- 1 small bunch fresh tarragon, leaves finely chopped (approx. 2 tbsp)
- 1 tbsp flat-leaf parsley, finely chopped
- 1 tsp Dijon mustard (not wholegrain)
- Sea salt and white pepper
- 2 sections bone marrow, halved lengthways
- 2–3 thick slices of good sourdough
- Unsalted butter, for spreading
- 1 tbsp small capers, rinsed and drained
- Small handful flat-leaf parsley leaves
- ½ lemon
- Maldon sea salt, to finish
- Temper the steak. Remove the côte de boeuf from the fridge at least 1 hour before cooking. Pat completely dry. Season aggressively with Maldon salt and cracked black pepper on both surfaces and the fat cap.
- Light the charcoal. Forty-five minutes before cooking, light a full chimney of lumpwood charcoal. Set up a two-zone fire: coals to one side for direct heat, the other side coal-free for indirect finishing.
- Make the béarnaise butter. Simmer shallots, white wine and vinegar for 5–6 minutes until absorbed and jammy. Cool completely. Beat into softened butter with tarragon, parsley and mustard. Roll in cling film and refrigerate.
- Grill the bone marrow. Place cut-side down over direct heat 3 minutes. Flip, season, move to indirect zone for 4–5 minutes until the marrow jiggles and just begins to melt. Keep warm.
- Sear the côte de boeuf. Rub with beef dripping. Sear over hot coals 3–4 minutes per side, rotating 90° halfway for a cross-hatch. Render fat cap upright for 2–3 minutes until golden and blistered.
- Finish over indirect heat. Cook to 50–52°C internal with a probe thermometer. Around 6–10 minutes. Remove at 50°C — carry-over will bring it to 54–56°C.
- Rest the steak. Transfer to a warm board. Loosely tent with foil and rest for 12–15 minutes. The board juices are liquid gold.
- Toast the sourdough. Char directly over the coals, 1–2 minutes per side. Butter immediately while hot.
- Build the bone marrow toast. Scoop marrow onto buttered toasts. Season with Maldon salt. Scatter capers and parsley. Squeeze of lemon.
- Carve and serve. Slice côte de boeuf away from the bone, cut across the grain into 1.5cm slices. Lay back over the bone. Top each slice with a coin of béarnaise butter and bring to the table immediately.
High direct heat drives moisture from the surface at a rate that triggers rapid Maillard reaction — the cascade of caramelisation and protein browning that generates hundreds of flavour compounds simultaneously. On charcoal, you additionally capture the volatile aromatic compounds from lumpwood combustion: sweet, faintly smoky, mineral. These infuse the outer crust during searing and are inseparable from what we understand as live fire flavour.
The two-zone setup is critical for a steak this thick. A 1kg-plus cut cooked entirely over direct heat would carbonise the exterior while the centre remains grey and cold. The indirect zone allows the centre to come up to temperature gently. Pulling at 50–52°C means the steak’s proteins haven’t fully firmed — you’re eating beef at its most yielding. The béarnaise butter delivers all the tarragon and shallot character of the classic sauce, applied at the table as each warm slice melts a cold coin into the pink board juices.
If côte de boeuf is unavailable, a thick-cut bone-in sirloin or large T-bone follows the same method exactly. Boneless ribeye also works — trust the probe over the clock. For the béarnaise butter, dried tarragon works (halve the quantity), but fresh June tarragon is vastly superior. A minced anchovy blended into the butter deepens the umami without being identifiable.
The béarnaise butter keeps refrigerated for two days and freezes for up to two months — slice coins from frozen and lay on the hot steak. Bone marrow can be soaked a day ahead. The côte de boeuf is best cooked fresh. Leftovers keep two days in the fridge: eat cold with cornichons and Dijon, or warm in a pan with butter for excellent steak sandwiches.
- Cooking straight from the fridge. A cold steak chars outside before the inside warms through. Always temper for at least one hour at room temperature.
- Not resting long enough. Cut into the steak immediately and red juice floods the board — juice that would have reabsorbed given ten more minutes. Patience here is the single biggest difference between a good steak and a great one.
- Underfuelling the fire. A thin bed of coals can’t sustain the heat needed for a steak of this mass. Use a full chimney of lumpwood and wait until every piece is uniformly grey and glowing.
Ask for your côte de boeuf with the chine bone removed (the vertebra side). It makes carving dramatically easier and does not affect the flavour — the rib bone alone is all the structure you need.
Wine: Crozes-Hermitage Syrah (Rhône) — black olive, smoked meat and violet character with an uncanny affinity for charcoal beef.
Beer: A citrus-forward session IPA — Beavertown Neck Oil or Verdant Lightbulb cut through the richness of marrow and béarnaise butter.
Non-alcoholic: Fever-Tree Black Cherry soda or cloudy apple juice cut with sparkling water.
A côte de boeuf of this size is a feast, not a dinner. Serve alongside beef-dripping roasted new potatoes; a watercress, shaved fennel and radish salad with grain mustard vinaigrette; fresh horseradish cream; cornichons and good Dijon. Extra sourdough is essential for the board juices.
How do I know when a côte de boeuf is cooked to the right temperature?
Use a probe thermometer. Pull at 50–52°C — carry-over heat brings it to 54–56°C during the rest. For medium, aim for 57°C on the grill. For a steak of this value, a probe is the most reliable guide.
Can I cook a côte de boeuf on a gas barbecue?
Yes. Gas lacks the volatile aromatics of lumpwood charcoal, but a cast-iron grate pre-heated as hot as possible, with an oak or beech wood chip pouch on the burner, gets you noticeably closer. Follow the same two-zone principle.
How long should I rest a côte de boeuf?
Minimum 10 minutes; 12–15 minutes is ideal for a 1–1.2kg steak. Rest for roughly half the total cooking time. Resting allows muscle fibres to relax and reabsorb the juices pushed to the surface by heat.
What is the difference between a côte de boeuf and a ribeye steak?
They come from the same part of the animal — prime rib, ribs 6–12. A côte de boeuf retains its rib bone and is cut to 5–7cm thick, making it a sharing steak. A ribeye is usually boneless and portioned for one. Both share the same abundant marbling and rich flavour.
Can I cook a côte de boeuf indoors without a barbecue?
Absolutely. A heavy cast-iron skillet pre-heated until smoking, using beef dripping or ghee. Sear 3–4 minutes per side, render the fat cap, then finish in a 200°C oven to 50–52°C internal, basting with butter, thyme and garlic. No charcoal smokiness, but still extraordinary.
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