Aziminu — The Corsican Fish Soup Tradition

Ingredients

• 60 ml Corsican olive oil
• 3 shallots, finely sliced
• 4 cloves garlic, 2 crushed for the broth; 2 roasted whole for the rouille
• 400 g ripe tomatoes, roughly chopped
• 200 ml Vermentino di Corse, one glass
• 1 bundle dried wild fennel stalks (finochju salvaticu), not fennel bulb; not fennel seed
• 3 bay leaves, from the maquis, or dried
• 4 sprigs wild thyme, dried
• 300 g grondin (gurnard), cleaned, cut into large pieces
• 300 g rascasse (scorpionfish), cleaned, cut into large pieces
• 200 g murène (moray eel), cleaned, cut into sections
• 200 g pageot (sea bream), cleaned, filleted or cut into pieces
• 200 g rouget de roche (red mullet), cleaned, whole or filleted
• 4 slices pain de châtaigne (chestnut bread), sliced thick for toasting
• For the rouille
• 1 head of garlic, roasted whole
• 60 ml Corsican olive oil, for emulsifying the rouille
• 1 tsp fine sea salt
• 500 ml water, to adjust broth level

Method

1. 1
   Warm the Corsican olive oil in a wide, heavy pot over medium heat. Add the shallots and crushed garlic and sweat gently until the shallots are soft and translucent, with no colour on the garlic — a sharp, raw smell gives way to a sweet, mellow one.
2. 2
   Add the chopped tomatoes, the dried fennel stalks, bay leaves, and wild thyme. Pour in the Vermentino di Corse. Stir to combine. The broth should smell immediately of maquis — fennel and thyme sharp over the wine — not of raw tomato alone.
3. 3
   Add enough water to cover the aromatics generously. Bring to a simmer and cook uncovered for twenty minutes. The broth will deepen to an amber-red; taste it — the Vermentino mineral note and the fennel stalk should be clearly present, neither raw nor bitter.
4. 4
   Strain the broth through a fine sieve, pressing the solids firmly. Return the strained liquid to the pot and reduce by one-third over a brisk simmer. The broth concentrates: the maquis aromatic character sharpens, the colour deepens to a clean amber-red without any trace of yellow. This reduction is where the dish lives or dies — insufficient reduction leaves a thin, underpowered broth; over-reduction produces bitterness.
5. 5
   Bring the reduced broth back to a steady simmer. Add the firmest-fleshed fish first — grondin, rascasse, and murène — and cook for five to six minutes. The flesh should be just beginning to yield at the thickest point when pressed lightly.
6. 6
   Add the delicate fish — pageot and rouget de roche — and cook for a further three to four minutes. Each variety must remain distinct: the pieces hold their shape, flesh opaque through to the centre, with no sign of flaking apart.
7. 7
   While the fish cooks, toast the slices of pain de châtaigne and rub immediately with a cut clove of garlic while hot. Prepare the rouille by pressing the flesh of the roasted garlic and working it with Corsican olive oil to a rough, thick paste.
8. 8
   Ladle the strained broth first into warmed bowls over the garlic-rubbed toasted pain de châtaigne. Serve the fish on a separate plate alongside. The broth must be deep amber-red with a clean, herbal-maritime aroma — wild fennel and thyme dominant, intensely marine, no one element overriding the others.