Marinated Tandoori Monkfish with Green Mango Chutney

Use the same weight, cut to the same thickness; cooking time is similar, but check it just flakes rather than overcooks.

Use the same weight, cut into thick pieces; softer than monkfish, so reduce simmering by a few minutes.

Use the same weight and thickness; keep pieces large so they do not break up in the curry.

Use the same weight; taste first as it can be smokier and saltier. Add lime or amchoor if the dish needs more tang.

Use about half the weight, mixed with black salt and a pinch of ground cumin. It gives tang and saltiness but lacks the minty, asafoetida notes.

Use about half the weight and add lime juice to taste. It gives the salty, sulphurous edge but not the full tangy blend.

Use equal volume or weight; delivers almost identical sharp acidity with a faintly more aromatic, bitter-edged profile.

Use 25% of the weight (about 1 g amchoor for 4 g juice); provides clean fruity tartness without thinning the sauce.

Use 75% of the volume; gives direct sourness without any citrus floral fragrance.

Use the same weight; sharper and less floral, so reduce any extra souring slightly.

Use about 30 g juice per lime (2 tbsp), strain pips; add at the end for fresh sourness.

Use 1 g amchoor for about 15 g lime juice; add early with spices; gives dry mango sourness, not citrus aroma.

Use the same weight and whisk smooth; same thick consistency.

Use 1.25 times the weight and strain through muslin for 30 minutes; looser if not strained.

Use the same weight; virtually identical.

Use the same weight; the difference is only the order of the names.

Mix with an equal weight of ginger paste and use the same total weight.

For 20 g paste use about 10 g crushed garlic and 10 g grated ginger root with a splash of water. Add a little extra water if the dish looks dry.

Use equal weight. It handles high-heat cooking well, but lacks the signature pungent, nasal heat of mustard oil.

Use equal weight. Neutral in flavour, so your curry will lack the characteristic Bengali or North Indian pungent punch.

Use equal weight. Imparts an earthy, slightly bitter note in temperings, though it lacks nigella's oniony sharpness.

Use equal weight. Gives a similar speckled appearance and light crunch on breads, but provides a nutty rather than herbaceous, onion-like flavour.

Use 75% of the weight. Fry in hot oil or ghee; has a sharper, more pronounced liquorice flavour, so use a lighter hand.

Use 60% of the weight. Stir into the sauce with ground masalas; provides identical sweet aniseed flavour without whole seed crunch.

Use one point (single carpel) per 1 g of fennel seeds. Simmer in gravies and remove before serving; gives a deeper, woodier liquorice aroma.

Same weight, lightly crushed; sweeter and milder but the closest match for the anise note.

Use two-thirds the weight; earthier and warmer, losing most of the aniseed character — good in breads and root vegetables.

Use half the weight; much more pungent and thyme-like, so add early in hot oil to soften it.

Use 50% of the weight. Mimics turmeric's warm, earthy, rhizome background, but provides none of the golden-yellow colour.

Steep a tiny pinch (0.1 g per 2 g turmeric) in 2 tbsp warm water; use to match the rich golden hue. Contributes an aristocratic, honeyed floral flavour rather than earthy bitterness.

Use 20% of the weight; stir in during tempering rather than crushing over at the end, and be cautious as it turns bitter easily.

Crush lightly and fry in the initial oil tempering, using 25% of the weight; provides bitter notes but lacks leafy aroma.

Use 1:1 by weight. Handles high-heat frying identically and introduces a very subtle, pleasant nuttiness.

Use 1:1 by weight. Yields a much richer, authentic aroma and a glossy, heavier mouthfeel.

Use 1:1 by weight. Heat until smoking, then cool slightly before cooking to temper its intensely pungent, sharp mustard kick.

Use the same weight for tempering. It is the closest match; watch the heat because it can pop faster than yellow mustard seed.

Use the same weight, or 75% if you want less heat. It is sharper and more pungent; temper in hot oil as usual.

Use about half the weight of whole seed, mix with a little water and add near the end. It will not give the same whole-seed crunch in a tempering.

Use 100% of the weight. Soak for at least 1 hour; takes about 10 minutes longer to cook through and has a marginally earthier flavour.

Use 100% of the weight. Reduces cooking time by about 10 minutes and breaks down softer, giving a smoother consistency rather than distinct grains.

For tempering or tadka only: use 70% of the weight. Browns faster in hot oil, providing a nutty, crunchy bite.

Use the same weight; tear and fry in oil as usual.

Use 50% of the weight, torn; citrusy but not resinous.

Use the same weight; sweet and aniseed-like, but quite different.

Use 1 g powder for every 1.5 g whole dried chilli; whisk with a spoonful of warm water and stir into the masala to provide identical ruby colour and mild heat.

Use 35% to 40% of the weight; discard seeds before tearing into oil to temper. Delivers a much fiercer heat, with significantly less red colouring.

Use the same weight, choosing the coriander element if available. If only basil is available, expect a sweeter, more aniseed flavour.

Use the same weight. Basil is sweeter and more aromatic in a different way; add near the end so it keeps its perfume.

Use 1.5 times the weight and reduce other liquid slightly; it is less fresh and more concentrated, so taste before adding more.

Use equal weight. Sauté in hot fat until the raw allium smell disappears; slightly wetter, but provides identical warmth and pungency.

Use 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.

Use 10 to 15% of the weight (about 1/4 teaspoon per chilli); imparts dry pungent heat and reddens the dish without the grassy crunch.

Use 1 dried pod per fresh green chilli; snap in half and temper in hot oil for a deeper, toastier heat.

Use the same weight and cut into pieces the same size; this is the closest.

Use 70% of the weight, soak in warm water for 15 minutes and drain; it is drier and chewier.

Use the same weight; texture is much smaller, so fold in gently at the end.

Use equal weight. Fry gently in oil or ghee with the ginger; incorporates smoothly into curries without visible minced bits.

Use 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.

Use 1.5 times the weight, very finely minced. Sauté until golden; provides savoury allium sweetness, though it lacks garlic's pungent sulphur bite.

Use the same weight; same result.

Use the same weight; same result.

Use the same weight; more sour, so adjust sugar.

Use the same weight. It is slightly coarser, so stir a little longer to dissolve; in baking, grind briefly if a fine texture matters.

Use the same weight, but dissolve it earlier as it is coarser. It adds a light caramel note and a little colour.

Use the same weight; crush or grate jaggery first. It darkens the dish and adds molasses flavour, so reduce other liquid slightly.