Spanish · Basque Country

Encebollado de rape: monkfish with onion

The Basque onion-fish preparation — thick monkfish tail sections slow-cooked in an extraordinary quantity of onions, olive oil, and white wine until the onion has completely dissolved into a silky, barely-there sauce and the monkfish is just cooked through. The technique is the same as the French confit d'oignon applied to a fish preparation: the onion is cooked on very low heat for an extended period until it loses all its sharpness and becomes sweet, slightly caramelised, and almost transparent. This is not a quick preparation. The onions require 60-80 minutes of slow cooking before the fish is added. But the result — monkfish of remarkable delicacy set against a sweet onion sauce with no cream, no butter, no thickener beyond the onion's natural sugars — is one of the most elegant preparations in the Basque repertoire.

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ServesFour portions

TotalAbout 1 hour 45 minutes

Sourced0of 6 in BC

Cook

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The Market List

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4 sections

monkfish tail

each section 3–4 cm thick, trimmed of membrane

Not yet stocked in British Columbia

8–12

sweet onions

very finely sliced; Cebolla Dulce del País Vasco preferred, or the mildest yellow onion available

Your own market

150 ml

extra-virgin olive oil

Your own market

150 ml

dry white wine

white Rioja or Txakoli

Not yet stocked in British Columbia

1 small pinch

saffron

crumbled into the wine

Your own market

fine sea salt

Your own market

The Method

Pour the olive oil into a wide, heavy-based pan — one large enough to hold the fish sections in a single layer later. Add all the sliced onions and a pinch of salt. Set the heat to the absolute lowest possible flame. The onions must not colour at the edges or sizzle aggressively; they should only soften and weep. Cook, uncovered, for 60–80 minutes, stirring occasionally, until the onions are completely soft, translucent, and sweet, with no residual sharpness. The mass will have reduced to roughly one-fifth of its raw volume.

Crumble the saffron into the white wine. Pour the wine over the softened onion and raise the heat very slightly. Cook for a further 10 minutes, stirring, until the wine has largely reduced into the onion base and the pan smells of sweet, wine-scented onion with no raw alcohol.

Season the monkfish sections lightly with salt and lay them on top of the onion in a single layer. Cover the pan and cook on low heat for 15 minutes. The fish is done when it is just opaque throughout and yields to gentle pressure with a fingertip — it should feel firm but not resistant, with no translucency at the centre. Internal temperature: 60 °C.

Taste the onion sauce and correct for salt. Serve the fish sections directly from the pan with the onion spooned generously around and beneath each piece.

III

Quality Hierarchy

Reserve — Cebolla Dulce del País Vasco — the named Basque sweet onion — with monkfish tail from the day's catch, and a single-estate Txakoli for both the cooking and the glass.

Estate — The sweetest locally grown onions available, a whole monkfish tail cut to order, and a white Rioja with some age.

Market — Standard mild yellow onions, fresh monkfish tail sections from a reliable fishmonger, and a decent dry white wine.

House — Any mild onion, defrosted monkfish tail, and a dry white wine adequate for cooking.

Sensory Tests

◇Sight. After 60–80 minutes, the onion mass is completely translucent, reduced to a fraction of its raw volume, and shows no white or opaque pieces.

◇Smell. After the wine addition, the pan smells sweet and wine-scented with no raw alcohol remaining.

◇Touch. The cooked monkfish yields to gentle finger pressure — firm but not resistant — and shows no translucency at the centre.

◇Where it lives or dies. The dish lives or dies on the first 60–80 minutes of the onion: rushed or even mildly hurried, the onions retain sharpness and body, and no amount of subsequent cooking corrects a harsh, under-dissolved base.

Pillar V

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