Copycat Keens Steakhouse Mutton Chop (The Famous One, Made at Home)
Prep time: 20 min (plus 18–24 hours dry-brine) Cook time: 20 min Serves: 2
Keens Steakhouse at 72 West 36th Street opened in 1885 as a chophouse and theatrical club, and it has served the same mutton chop ever since — it sold its one-millionth chop back in 1935. The restaurant nearly closed in the late 1970s and was bought and restored by George Schwarz, reopening in 1981 after a three-year, $1.4 million renovation. It has changed its kitchen equipment several times and watched nearly every other Victorian-era restaurant in Manhattan disappear. The mutton chop, a 26-ounce saddle chop, has not changed.
What makes it famous is not just the age of the recipe. It is the specificity of the cut — a saddle chop from a sheep at least two years old, not a lamb — combined with the extreme heat of Keens’ commercial broilers. The result is a crust that forms in seconds under 800-degree radiant heat while the interior climbs slowly and evenly to medium. At home, you cannot replicate those temperatures. You can close most of the gap with a dry-brine, a screaming-hot cast-iron skillet, and a properly preheated broiler.
The mint sauce is structural, not decorative. British cooks have paired vinegar-and-mint with mutton for at least four centuries for the same reason bartenders pair citrus with dark spirits: the acidity cuts through the fat, making each successive bite feel as clean as the first. Do not skip it.
Why Mutton, Not Lamb
Most Americans under fifty have eaten lamb but not mutton, and many confuse the two. Lamb is from an animal slaughtered before one year old — usually at four to eight months. The meat is mild, the fat is white and light, the flavor is accessible. Mutton is from an animal that has lived at least two years. The meat is darker (more myoglobin from continued muscle use), the fat is yellow-tinged (from carotenoid accumulation in older grass-fed animals), the flavor is several times more intense.
Keens chose mutton in 1885 for flavor. Mutton holds up to high-heat cooking in a way that lamb does not — the stronger flavor survives and deepens under the broiler’s intensity rather than cooking flat. The same logic applies at home: the cast-iron sear and broiler finish that would make a lamb chop slightly aggressive make a mutton chop properly caramelized.
Sourcing is the hardest part of this recipe. Halal butcher shops are the most reliable domestic source. A butcher that handles whole animals (not just pre-cut primals) can cut a saddle chop to order if called a day ahead. Online, Heritage Foods and D’Artagnan have carried mutton at various points; availability varies by season.
The Saddle Chop vs. the Loin Chop
A saddle chop is a cross-section through both loins at once, with the backbone connecting both sides. It is the largest single chop cut from a sheep and looks like a butterfly loin chop, symmetrical around the spine. Keens serves a single saddle chop per person — it is a dramatic plating.
At home, sourcing a saddle chop requires either a whole-animal butcher or a call to a halal shop that breaks down whole sheep in-house. If you cannot find one, two thick double-cut loin chops (from one side of the loin, each at least 1.5 inches thick) give you the same flavor and cooking method, plated overlapping. The experience is the same; only the presentation changes.
The Dry-Brine
Twenty-four hours in the refrigerator, uncovered, on a wire rack with generous kosher salt. The brine serves two purposes. Salt initially draws moisture to the surface by osmosis; that moisture dissolves the salt; the brine is then slowly reabsorbed into the meat as the osmotic pressure equalizes, carrying the dissolved salt with it. This seasons the interior — not just the surface — of a thick chop. The second purpose: the uncovered time in the refrigerator dries the exterior surface, which is the single most important factor in crust formation. A wet surface steams before it sears; a dry surface sears immediately.
The Cook
Mutton targets medium, not medium-rare. At medium-rare (130°F), mutton’s high-melting-point fat is still partially solid — waxy and unappealing. At medium (140 to 145°F), the fat has fully liquefied and basted the surrounding lean meat during cooking. Pull at 135°F; carryover heat takes you to 140°F during the five-minute rest.
The sequence is: smoking cast iron for the sear (3 minutes per side) then the broiler for the interior (5 to 7 minutes per side). The cast iron builds the crust at 600°F surface temperature; the broiler develops the top face and finishes the interior with radiant heat from above. Together they approximate what Keens’ commercial equipment does in a single step.
The Mint Sauce
The Keens version is British-style mint sauce — vinegar-based, moderately sweet, steeped with fresh mint — not mint jelly, which is gelatin-set and much sweeter. The quick version: heat white wine vinegar with sugar, remove from heat, steep with finely chopped mint for 10 minutes. The sauce takes longer to describe than to make.
Serve it in a small dish on the side. The proportions are approximately one dip per bite of meat — not poured over the chop, not ladled. Each person calibrates to taste.
