Madras Fish Curry

Use the same weight; remove any skin and cut into even pieces. Cook gently for the same short time.

Use the same weight; check for bones and simmer 5–8 minutes until just opaque. It may be softer, so stir less.

Use the same weight; clean, skin and cut into chunks. Cooking time is similar, but check for bones.

Use equal volume or weight; slightly sweeter and less pungent, but otherwise an imperceptible swap.

Use 25% of the weight; imparts dry, fruity sourness, best stirred in right at the end of cooking.

Use 50% of the weight; delivers pleasant fruity tang but turns pale sauces considerably darker.

Use 100% of the weight directly. It delivers an identical sharp, clean acidity to curries and marinades.

Use 100% of the weight. Add towards the end of cooking off the heat; introduces a fruity citrus aroma rather than pungent acetic sharpness.

Use 75% of the weight diluted in a splash of warm water. Gives a rich, fruity sourness and darkens the gravy.

Grind whole seeds finely in a spice grinder; use equal weight (1:1). Ensure it cooks through gently, as undercooked or burnt ground seeds become intensely bitter.

Crush dried leaves between your palms and add towards the end; use 50% of the weight. Gives the unmistakable maple-herb aroma without the sharp bitterness of the seeds.

Grind finely; use 50% of the weight. Adds an earthy, sharp bite, though it lacks the distinctive sweet-curry smell.

Dry-roast briefly and grind finely; use equal weight (1:1). Imparts an even punchier, nuttier, toasty aroma than pre-ground cumin.

Use equal weight (1:1). Adds mild, lemony sweetness rather than cumin's smoky, earthy bite; curries will taste lighter and less savoury.

Grind finely; use 60% to 75% of the weight. Produces a darker, more complex, smoky-herbal flavour suited to rich gravies.

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. The seeds are smaller and hotter; fry in hot oil until they pop, about 20–30 seconds, and reduce the heat if they darken too fast. The dish will be a little sharper.

Use the same weight. They are milder and larger; fry a few seconds longer until they pop. The finished dish will have less pungency.

Use 70% of the weight of whole seed, added with the other ground spices rather than fried whole. You lose the popping texture and the heat comes through more evenly.

Use equal weight, finely sliced. Shallots soften and brown faster, giving a slightly sweeter and more delicate base to curries.

Use 80% of the weight, finely shredded and browned slowly with a pinch of asafoetida. Replicates the bulk and natural sweetness in gravies without allium.

Fry 1 bay leaf for every 5 curry leaves in hot oil; imparts a warm, woodsy background note, but misses the citrus-sulphury punch entirely.

Add a small squeeze (about 5 ml per sprig of curry leaves) right before serving; provides sharp citrus top notes without the toasty, herbal aroma.

Dry-roast lightly in a pan and grind to a fine powder; use equal weight (1:1). Offers a noticeably fresher, brighter citrus note.

Use 50% to 75% of the weight. Lacks the floral, citrusy profile of coriander and turns the gravy heavier, earthier, and darker.

Use 50% of the weight and stir in near the end of cooking. Adds warmth and depth since it contains ground coriander, but introduces stronger spices like clove and cinnamon.

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 100% of the weight. Provides direct, sharp heat and red colour in equal measure.

Use 150% to 200% of the weight if matching colour, but add a pinch of black pepper or hot chilli if you need equivalent fiery heat.

Use 75% to 100% of the weight. Offers a sharp, clean heat with slightly less earthy depth and less crimson colour.

Use 180% of the weight of compressed tamarind; soak in three times its weight of boiling water for 15 minutes, knead, and strain out the thick pulp.

Use 35% of the weight dissolved in two tablespoons of warm water. Provides sharp tang, though the resulting sauce will be lighter in colour.

Use equal weight, added right at the end of cooking. Adds sharp acidity without the deep brown hue or pulpy thickness.

Use 50% to 60% of the weight, soaked in equal parts warm water for 15 minutes before grinding. Works well for chutneys, though texture is slightly finer and sweeter.

Use 1.2 times the weight in curries. Adds creamy richness and authentic flavour, but makes gravies smoother and eliminates the grated, chewy mouthfeel.

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 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 40% to 50% of the fresh tomato weight mixed with a splash of water. Imparts a deeper red colour, thicker sauce, and slightly sweeter cooked flavour.

Use 60% of the weight, whisked smooth and added on low heat. Provides rich body and sourness, though the gravy becomes paler and creamier.

Grind the same weight of seeds with a little water to a smooth paste; soak first for easier grinding.

Use the same weight, soaked and ground; they give a milder colour and similar thickening.

Use about 70% of the weight; it thickens and enriches similarly but tastes sweeter and less nutty.