Buridda Corsa — Corsican Fish Stew with Aioli Integration

Ingredients

• 600 g Merluccius merluccius (European hake), skin-on fillets, cut into 80 g portions
• 400 g Epinephelus marginatus (dusky grouper), skin-on fillets, cut into 80 g portions
• 500 g Mytilus galloprovincialis (Mediterranean mussels), scrubbed and debearded
• 200 g Pecten maximus (great scallop), shucked, roe on, when available
• For the stock
• 1 kg white fish bones and heads, roasted in a hot oven until golden before use
• 1.5 l cold water
• For the stew base
• 400 g island tomatoes, peeled, seeded, roughly chopped
• 1 pinch Crocus sativus threads (saffron), added at the start of simmering, not at the end
• 1 tsp sea-mineral salt (sel marin), adjust to taste
• 4 g Mentha (fresh mint), leaves only
• 4 g Finochju Salvaticu (wild fennel herb), fronds only
• For the aioli
• 6 cloves Allium sativum (garlic), peeled
• 3 Gallus gallus domesticus egg yolks, at room temperature
• 250 ml Olea europaea oil (olive oil), added in a slow, steady stream while whisking
• 1 pinch sea-mineral salt
• To serve
• 4 slices island bread (pain de campagne), grilled, then rubbed with a raw garlic clove while hot

Method

1. 1
   Roast the fish bones and heads in a high oven until they are coloured and smell nutty. Transfer to a stockpot, cover with 1.5 l cold water, bring slowly to a bare simmer, and skim. Simmer uncovered for 25 minutes — no longer, or the stock turns bitter. Pass through a fine sieve. The stock is ready when it is clear, amber-gold, and tastes of concentrated sea and fish rather than water.
2. 2
   Pound the Allium sativum to a smooth paste with a pinch of sea salt in a mortar. Work in the egg yolks until the paste is uniform and pale. Add the olive oil drop by drop at first, then in a thin, steady stream, whisking or stirring constantly, until the emulsion is thick, glossy, and holds a firm ribbon on the surface. The aioli is ready when a spoon lifted from it carries a mass that falls only slowly back into the bowl.
3. 3
   In a wide, heavy pot, combine the prepared fish stock with the chopped tomatoes and the saffron threads. Bring to a steady simmer. Add the maquis herbs — Mentha and Finochju Salvaticu. Simmer uncovered for 15 minutes so that the saffron yields its full colour and warmth, the tomatoes dissolve into the liquid, and the stock reduces to a flavour dense enough to support the aioli. The base is ready when it is deep gold, fully opaque from the tomato, and the saffron aroma is pronounced.
4. 4
   Add the mussels to the simmering stew and cover. After 3 minutes, add the hake, grouper, and scallops (if using). Cook at a steady simmer — never a rolling boil — for a further 5 minutes. The fish is done when the hake and grouper are just opaque at the centre and separate at the flake without resistance; the mussels must be fully open. Discard any mussels that remain closed.
5. 5
   Remove the pot from the heat. Allow the stew to settle for one minute so that the temperature falls to approximately 80°C — hot but no longer boiling. This is where the dish lives or dies: the aioli must now be integrated in stages, adding two large spoonfuls at a time and whisking them thoroughly into the liquid before adding the next. Continue until all the aioli is incorporated. The heat of the stew, regulated to this precise window, sets the emulsion without scrambling the yolk. The finished stew coats a spoon in a velvety, opaque film — neither watery nor thick like a cream soup — and shows no oil pooling on the surface.
6. 6
   Taste and adjust the salt. Ladle into warmed wide bowls, distributing fish and shellfish evenly. Lay the grilled, garlic-rubbed bread across the rim of each bowl. The stew is ready to serve when the Allium sativum depth runs throughout the broth, the saffron warmth is present in every mouthful, and the fish retains sweetness rather than any wateriness.