
Cured Trout in Kasundi Mustard
A cured sea trout fillet, scented with gin and a chilli-spiked salt-and-sugar cure, then coated with kasundi mustard. It is served cold with pickled kohlrabi and a smooth green pea purée, giving a sharp, mustardy, fresh taste.
Marinade chilli
200 gStirred into the dry cure (step 1)Everything else
Method
- In a non-metal dish, mix 500 g caster sugar, 500 g sea salt, 12 g lemon zest, 5 g lime zest and 200 g kashmiri chilli powder (the marinade chilli) until evenly combined.
- Rub 420–560 g sea trout fillet with spiced gin to taste. Lay the fillets flesh side down in the cure.
- Cover the dish and chill for 8 hours.
- Turn the fillets over, cover again and chill for another 8 hours.
- Rinse the fillets under cold running water until the cure is gone. Dry them with kitchen paper; the flesh should feel firm and have lost most of its moisture.
- Spread 200 g kasundi mustard over the flesh side of the fillets. Cover and chill until needed.
- Put 300 g kohlrabi, peeled and diced, into 398 g pickling liquor. Leave at room temperature for 1–2 hours, then chill until needed.
- For the pea purée, process 450 g petit pois, 12 g garlic, fresh ginger to taste, 18 g green chilli and 91.3 g mustard oil until completely smooth.
- Add caster sugar and sea salt to the pea purée to taste. Cover and chill.
- To serve, cut the trout into thin slices. Plate with the pickled kohlrabi and a little pea purée.
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Sea trout fillet

Salmon filletUse the same weight; add 1–2 minutes, as salmon is usually thicker.
TroutUse the same weight; cook 1–2 minutes less if the fillet is thin.
Firm white fish filletUse the same weight; reduce cooking by 2–3 minutes and handle gently.

Spiced gin

GinUse the same weight; for 100 g gin, steep a pinch of ground clove and ground cinnamon for 10 minutes, then strain.
Premium ginUse the same weight; it is smoother, so add the same spice pinch and taste before adding more.
VodkaUse the same weight; it is neutral, so steep with ground clove and ground cinnamon to mimic the spiced note.

Kasundi mustard

Wholegrain mustardUse the same weight, mashed smooth with a little lime juice; keeps mustard tang but lacks Bengali fermentation.
English mustardUse one-third of the weight, mixed with lime juice or water; much hotter, so taste as you go.
Mustard powderUse half the weight, mixed to a paste with water and a squeeze of lime juice; add late so the heat does not fade.

Caster sugar

Granulated sugarUse the same weight. It is slightly coarser, so stir a little longer to dissolve; in baking, grind briefly if a fine texture matters.
Demerara sugarUse the same weight, but dissolve it earlier as it is coarser. It adds a light caramel note and a little colour.
Ground jaggery or soft brown sugarUse the same weight; crush or grate jaggery first. It darkens the dish and adds molasses flavour, so reduce other liquid slightly.

Lemon rind


Lime zest

Lemon zestUse the same weight; it is less sharp and more floral, so add a little extra lime juice if the dish needs tang.
Kaffir lime leafUse 1 leaf for 1 tsp lime zest in curries; bruise and simmer whole, then remove. It gives aroma but not acidity.

Kashmiri chilli powder

Dried kashmiri chilliGrind deseeded dried pods to an equal weight of powder; gives identical vivid red colour and gentle warmth.
Red chilli powderUse 25% of the weight mixed with sweet paprika for colour; straight red chilli powder is substantially hotter and will make the dish fiery.
Chilli powderUse one-third of the weight; the sauce will be less intensely red and notably sharper in heat.

Kohlrabi

TurnipUse the same weight, peeled and cubed; similar texture, slightly peppery.
PotatoUse the same weight, peeled and cubed; milder and softer, so add 5 minutes later if you want it to hold shape.
White radishUse the same weight, peeled and cubed; cooks faster and is more watery, so add later and reduce the gravy.

Pickling liquor

White vinegarUse 70% of the weight, make up the rest with water, and add a little granulated sugar if the liquor was sweet. Sharper and thinner.
White wine vinegarUse at 70% of the weight with water. Milder and fruitier than pickling liquor.
Malt vinegarUse at 60% of the weight with water; stronger and maltier, so reduce any other vinegar in the dish.

Green pea


Garlic

Garlic pasteUse equal weight. Fry gently in oil or ghee with the ginger; incorporates smoothly into curries without visible minced bits.
Garlic powderUse 15% to 20% of the weight (about 1 g for every 5 to 6 g fresh cloves). Whisk into sauces; gives a savoury, toasted garlic flavour without raw pungency.
ShallotUse 1.5 times the weight, very finely minced. Sauté until golden; provides savoury allium sweetness, though it lacks garlic's pungent sulphur bite.

Fresh ginger

Ginger pasteUse equal weight. Sauté in hot fat until the raw allium smell disappears; slightly wetter, but provides identical warmth and pungency.
Ground gingerUse 20% to 25% of the weight (1 g for every 4 to 5 g fresh). Stir into the gravy; adds peppery heat and warmth, though it misses the crisp, zesty kick of raw root.

Green chilli

Chilli powderUse 10 to 15% of the weight (about 1/4 teaspoon per chilli); imparts dry pungent heat and reddens the dish without the grassy crunch.
Dried red chilliUse 1 dried pod per fresh green chilli; snap in half and temper in hot oil for a deeper, toastier heat.

Mustard oil

Peanut oilUse equal weight. It handles high-heat cooking well, but lacks the signature pungent, nasal heat of mustard oil.
Vegetable oilUse equal weight. Neutral in flavour, so your curry will lack the characteristic Bengali or North Indian pungent punch.
Similar dishes

- Same: Amritsari Haddock in Mustard Oil shares with this dish mustard oil, Kashmiri chilli, green chilli, petit pois pea purée and a pickling-liquor garnish.
- Different: Unlike this dish's salt-sugar-gin cure and kasundi mustard finish, Amritsari Haddock in Mustard Oil is cornstarch-coated and deep-fried in vegetable oil with turmeric, caraway, onion seed, fennel and ginger garlic paste.

- Same: Torched Mackerel with Gooseberry Chutney shares kasundi mustard, mustard oil, Kashmiri chilli, ginger, green chilli, pickling liquor, sugar and sea salt with this dish.
- Different: It torches mackerel instead of curing sea trout, and it adds gooseberry, cucumber, flaked almonds, chaat masala, onion seed, bay leaf, turmeric and vegetable oil while lacking kohlrabi, petit pois, gin, lemon zest and lime zest.

- Same: Punjabi Machhli shares fish, mustard oil, garlic, ginger, green chilli, Kashmiri chilli powder and salt with this dish.
- Different: Punjabi Machhli is a simmered onion-tomato curry with cumin, turmeric, kasoori methi and vegetable oil, while this dish is a gin-salt-sugar-cured trout with kasundi mustard, pickled kohlrabi and pea purée, so it lacks this dish’s curing liquor, citrus zest, kohlrabi and peas and uses cod or monkfish instead of sea trout.

- Same: Aa and this dish are both fish dishes that use green chilli and garlic.
- Different: Aa is a light brothy stew poached with onions, garlic, green chilli and fermented fish, while this dish is cured sea trout finished with kasundi mustard and served with pickled kohlrabi and pea purée, using curing salt, sugar, gin, Kashmiri chilli powder, mustard oil and citrus zests.



































