Spit Roasted Mediterranean Spiny Lobster | Aragosta allo Spiedo
Aragosta allo spiedo is a Mediterranean spiny lobster mounted on a rotating rod in front of wood embers and basted with a butter built from its own coral. The rod is the point. A lobster that turns takes heat from every direction in sequence, and the butter and juices leaving the shell never reach the fire, because the surface carrying them keeps climbing back to the top.
Everything else is about not wasting that. The fire burns down to grey embers so no flame can torch the shell, the piece is balanced so it turns at one speed, and the butter, loaded with coral and tomalley from the head, is brushed on while the rod keeps moving. The tail comes off at 131 to 136°F (55 to 58°C).
It fails in two places: a lobster that was not alive and vigorous when you bought it, and a tail taken five degrees too far. Charred lemon, flaky salt and the last of the butter are all that reach the plate.
Yield: 2 main course servings. Prep: 30 minutes. Fire: 40 minutes to burn down. Cook: 14 to 18 minutes. Rest: 3 minutes. Total: about 1 hour 30 minutes. Difficulty: advanced. Course: secondo di mare. Region: Sardinia, Sicily and the Egadi islands.
The Story
Be clear first about which animal this is. The aragosta of the Mediterranean, Palinurus elephas, has no claws at all: two long spiny antennae, a hard reddish brown carapace flecked with pale spots, and all the meat in the tail. The astice, Homarus gammarus, is another creature, blue black, armed with two heavy claws, softer in the flesh, a cold water animal of the Atlantic rather than the warm rocky bottoms off Sardinia. Menus blur the two and a cook should not, because the aragosta tail is leaner and punishes extra minutes of heat in a way an astice forgives.
It is taken with nasse, baited creels dropped on rocky ground between about 65 and 200 feet (20 and 60 metres). That fishery is old and still local: the Sardinian west coast around Alghero, the waters off Trapani, and above all the Egadi islands, Favignana, Levanzo and Marettimo, where pots and tuna have kept the same families for generations. The season closes through the spawning months and the catch is small, so an aragosta has never been cheap.
The spit is just as old and comes from somewhere else. The girarrosto in front of a fireplace is a founding piece of Italian cooking, and allo spiedo still means something precise in Brescia and the Valtellina, where small birds and pork turn for hours over wood. On the coast, fuoco vivo and a grate were the normal way with a crustacean: split it, lay it on the embers, done. An aragosta on a rotating rod is not village tradition, and it is worth being honest about that: it is a chef move, cucina di ricerca, applying a mainland meat technique to shellfish because the rotation solves a problem the grill has.
Ingredients
For the lobster
Live spiny lobsters, aragosta, 2, each 1 1/2 lb (680 g)
Extra virgin olive oil, 2 tbsp (30 ml)
Coarse sea salt, for the shell only, 1 tbsp (18 g)
For the coral and herb butter
Unsalted butter, softened, 7 tbsp (100 g)
Coral and tomalley from the lobsters, about 2 tbsp (30 g)
Garlic clove, grated on a fine rasp, 1
Flat leaf parsley, finely chopped, 2 tbsp (8 g)
Wild fennel fronds, chopped, 1 tbsp (4 g)
Finely grated lemon zest, from 1 lemon
Dry white wine, 1 tbsp (15 ml)
Fine sea salt, 1/2 tsp (3 g)
Freshly ground white pepper, to taste
For the fire
Oak or olive wood, about 4 lb (1.8 kg), or lump charcoal
Dry vine cuttings or wild fennel stalks, a small handful
For finishing
Lemon, cut in half across, 1
Extra virgin olive oil, a few drops per plate
Flaky sea salt, a pinch per plate
Flat leaf parsley leaves, 8
Preparation
Step 1
Choose a lobster that is alive and in condition. Handle it before you pay. A vigorous aragosta is heavy for its size, the antennae are long and unbroken, the legs push back against your hand, and the tail curls hard under the body and snaps back when you straighten it. A limp tail means an exhausted animal and soft meat. Eyes dark and glossy, smell of clean sea water and never of ammonia. For the spit look for 1 1/4 to 1 3/4 lb (570 to 800 g) each: lighter and the tail dries before the shell colours, heavier than 2 lb (900 g) and it will not cook evenly.
Step 2
Kill it quickly, then open it and take the coral. Twenty minutes in the freezer sedates the animal, so the dispatch is cleaner and safer for your hands. Lay it belly down, find the cross shaped mark just behind the eyes and drive the point of a heavy knife down through it in one movement: that is the nerve centre and death is immediate. Cut it lengthwise from between the eyes to the end of the tail, discard the grit sac and the intestinal thread, and scoop the green brown tomalley and, on a female, the dense coral into a bowl. That is the flavour of the dish and what most cooks throw out with the head. You can spit the lobster whole instead of split, which holds more moisture, but then the butter only touches the shell.
Step 3
Make the coral and herb butter. Press the coral and tomalley through a small sieve into the softened butter to leave the membrane behind. Work in the grated garlic, parsley, wild fennel, lemon zest, white wine, salt and white pepper until it is uniform and pale coral pink. Taste it: sweet, marine, clearly salty, since it is the only seasoning the meat gets while it cooks. Two thirds goes into a pan for basting, one third stays cold for the plate.
Step 4
Mount the lobster and balance it on the perno. Run the rod along the exact centre line of the body, in at the tail and out at the head, slowly enough that it follows the length instead of wandering out through the side. Set one spit fork so both prongs bite the thick tail muscle and the other so they hold the head, pairing the halves head to tail so weight sits evenly. Then test the balance cold: rest the loaded rod across two glasses and let go. If it rolls back to the same point every time the load is off centre, so loosen the forks, turn the lobster slightly and seat them again until the rod stays put.
Step 5
Build the fire and set the distance. Burn the wood down to a bed of embers covered in grey ash, spread slightly wider than the lobster is long, with no flame on it. That takes about 40 minutes and cannot be hurried: one flame licking the rod scorches the shell and turns the butter bitter. Set the rod 8 to 10 in (20 to 25 cm) from the bed, where your palm should last 4 or 5 seconds. Add the vine cuttings or fennel stalks in the last five minutes.
Step 6
Turn and baste, then rest three minutes. Keep the rotation at 2 to 4 turns a minute and brush the butter on every second or third revolution with a long handled brush, with the rod still moving, in thin repeated coats. Timing follows weight, roughly 14 minutes for 1 1/4 lb (570 g) and up to 18 for 1 3/4 lb (800 g), but the thermometer decides: probe the thickest part of the tail and take it off at 131 to 136°F (55 to 58°C). Rest it on a warm tray cut side up so the juices collect in the shell, no longer than three minutes, because crustacean muscle has no connective tissue to relax. Char the lemon halves while it sits.
Plating
Decide whether the meat is served in the shell or lifted out. In the shell keeps the tail hottest: the half goes on a warm plate cut face up, and the shell works as a bowl holding the melting butter against the meat. Lifted out is the restaurant version: scissors down the soft underside, slide the muscle free in one piece, cut four thick medallions, rebuild them in order and set the empty shell behind.
Warm plates, not hot: a hot plate keeps pushing heat into a tail you have just stopped cooking. Spoon the reserved cold butter over the meat at the pass so it is still pooling when the plate lands. Add the charred lemon cut face up and nothing else: no vegetables underneath, no sauce on the base. Flaky salt last.
Professional Technique
The technique that defines this dish is continuous rotation, and it does two things at once. The first is geometric. A lobster that turns presents every part of its surface to the embers in sequence, so no face sits in the radiant field long enough to run ahead of the rest, and heat walks inwards from all sides towards the centre of the tail instead of from one direction. That is the substantial difference from the grill, where the lobster lies still and the fire reaches it from below only, so the cook is always managing a gradient: the underside browns while the top is barely warm, and the remedies are turning it by hand or accepting an uneven tail.
The second thing rotation does is keep the fat. On the spit the lowest point of the lobster is a moving target: a quarter turn later the surface that was underneath is at the side, half a turn later it is on top. Melted butter and the juices leaving the shell therefore never hang at a fixed low point and fall off. They run back along the body, are carried up and over and pass the meat again and again, so over a quarter of an hour the same fat crosses the same flesh dozens of times. On a grill it drips into the coals and is lost, flaring and depositing sooty smoke on the way up.
Both depend on a mechanical condition that is easy to skip: the piece has to be balanced on the perno. A load whose centre of mass is off the axis makes the motor labour on the way up and then lets the lobster fall through the bottom of the arc. The rotation becomes a series of jerks instead of a constant sweep, the heavy side faces the embers longer, and both advantages disappear.
Texture and Moisture Control
Spiny lobster tail is dense lean muscle with almost no fat or collagen, and its window is narrow. Below about 120°F (49°C) it is translucent and slippery. Between 131 and 136°F (55 to 58°C) the proteins have set into short firm flakes that stay juicy and break cleanly under a fork. Past 145°F (63°C) the fibres contract hard, squeeze out the water held between them and turn the tail stringy, with no way back. It therefore comes off two or three degrees short, because carryover keeps working after the rod stops.
Moisture is managed by the butter and by where the salt goes. Repeated thin coats leave a film of fat that slows evaporation and browns into a glaze, which is why little and often beats one heavy painting. Salt landing early on the cut face does the opposite: it pulls water to the surface, where it boils instead of glazing, so the meat is salted at the plate. Keep the basting butter under about 190°F (88°C), because once it simmers the coral granulates and the pink turns dull brown.
Professional Mise en Place
The fire takes longer than the cooking, so it is the first thing you start and the butter is made while it burns down.
Equipment and tools
Rotisserie rod with two adjustable spit forks and a motor, or a hand cranked girarrosto
Heavy chef knife, grooved board, scissors, fine rasp grater
Small sieve, pan for the basting butter, long handled brush, instant read thermometer
Prepared ahead
Coral and herb butter, up to 1 day ahead, softened before use
Wood burnt down to grey embers, about 40 minutes before service
Lemon halved, parsley picked, salt and oil within reach
Service setup
Basting butter warm beside the embers, never simmering
Rod balanced and checked cold before it goes near the fire
Warm plates and a warm tray for the rest, plus the reserved cold butter and flaky salt at the pass
Chef Tips
Ask for a female if the season allows it. The coral is the butter, and a female carries far more of it than the tomalley alone. Look under the tail: the female has small feathery appendages for carrying eggs. With a male the butter is paler, so add more lemon zest.
Weigh both lobsters and cook matched pairs. Two pieces of the same size reach temperature together, while a 1 1/4 lb next to a 2 lb guarantees one is wrong. Cook mismatched lobsters in two passes.
Do not open the lobster until the embers are nearly ready, because cut flesh dries at the surface and loses the juice that should be basting it. Fire first, butter second, lobster last.
With no rotisserie, do not pretend a grill is the same thing. Either cook it as aragosta alla griglia, a different and perfectly good recipe, or improvise a real rotation with a metal rod across two brick stacks, cranked by hand.
Common Mistakes
Boiling or blanching the lobster before it goes on the rod. The commonest shortcut and it destroys the dish. The tail contracts in the water, gives up the juice that should have basted it, then contracts again in front of the fire, arriving twice cooked and rubbery.
Cooking over flame instead of embers. A flame blackens the shell and scorches the butter into bitterness long before the tail is warm. Wait for the bed to go grey, and if dripping fat starts a flame, raise the rod.
Stopping the rotation to baste. Every pause hands back the one sided gradient the spit exists to remove, and the face left towards the embers dries visibly in under a minute.
Cooking to the clock and not to temperature. Two lobsters of the same weight can differ in tail thickness by a third, so 14 minutes is right for one and too long for the other. Probe the thick part of the tail instead.
Wine Pairing
Etna Bianco DOC: The closest thing here to a wine made for wood smoke. Carricante on volcanic sand gives a sharp lemon acidity with a smoky mineral note underneath, and that smoke runs alongside the aroma the embers leave on the shell. The acidity then cuts the coral butter cleanly.
Franciacorta DOCG: The metodo classico answer and the most reliable choice here. The mousse scrubs the butter off the palate mechanically, while long lees ageing gives a bready depth heavy enough to stand next to roasted shellfish. Choose a Brut over an Extra Brut.
Greco di Tufo DOCG: Chosen for structure rather than freshness. Greco is one of the few Italian whites with real body and a waxy grip, and that texture meets the weight of the butter head on. Its smoky stone fruit holds up against the charred shell.
Grillo Sicilia DOC: The geographic match, from the western Sicilian coast where the Egadi pots are lifted. Grillo brings a broad saline finish and a bitter almond note, and salt against salt is the point: it reads as sea water beside the sweetness of the tail. Serve unoaked and cold.
Storage & Reheating
This is a dish to eat off the fire and it does not improve by waiting. If there is cooked lobster left, pick every scrap out of the shells while they are warm, because it comes away cleanly then and fights you cold. Pack the meat in an airtight container, spoon melted coral butter over it to seal the surface, and refrigerate for no more than 24 hours. Never leave it in the shell overnight, because the shell holds warmth and the meat picks up an iodine edge.
Do not reheat it in front of the fire and do not use a microwave: both take a tail already at the top of its window straight past it. Warm the picked meat in a pan of coral butter held below 150°F (65°C) and serve at once, or use it cold over fennel and orange.
The coral butter freezes well, rolled in parchment, for a month, and the empty shells go into a bisque. Do not freeze the cooked tail meat, which comes back woolly.
Nutrition
Per serving, based on 2 main course portions with half the coral butter each:
Calories: 630 kcal
Total Fat: 47 g
Saturated Fat: 27 g
Trans Fat: 1.5 g
Unsaturated Fat: 16 g
Cholesterol: 335 mg
Sodium: 960 mg
Total Carbohydrates: 3 g
Fiber: 0.5 g
Total Sugars: 1 g
Added Sugars: 0 g
Protein: 47 g
Lactose: 0.6 g
Principal micronutrients: selenium, copper, zinc, iodine, vitamin B12, vitamin A, phosphorus
These figures are estimates, and the butter is the biggest variable, since much of what you brush on ends up on the shell rather than eaten.
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