Masala Mackerel

Use the same weight. It is neutral and behaves the same in frying and tempering; no noticeable change in flavour.

Use the same weight. Neutral and good for high heat; the dish will taste virtually the same.

Use the same weight. It has a mild nutty flavour and is good for Indian cooking; heat until just hot, not smoking, so the nuttiness does not dominate.

Use the same weight. Pomfret is firmer and milder; haddock is leaner, so add a little oil if the recipe expects oily mackerel. Cook for about the same time.

Use the same weight and cook 1–2 minutes less; it is less oily, so baste with oil or add a little coconut milk if the gravy needs richness.

Use the same weight, cleaned and cut into steaks; allow a few extra minutes and watch for bones. The flavour is stronger and oilier.

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 the same weight; cook a little longer. Milder and less sweet when raw.

Use the same weight; sweeter and softer, so reduce cooking time slightly.

Use only the white parts, weight for weight, for raw or quick-cooked dishes; green parts are too grassy for long cooking.

Use 200% to 250% of the weight. Finely grate or blend fresh tomatoes, then cook them down until the moisture evaporates and the oil separates.

Use the same weight; this is the first half of the book's option and gives the best red colour with mild heat.

Use the same weight; add a pinch of cayenne pepper for warmth. Slightly less colour.

Use the same weight and add cayenne pepper to taste; works but is less aromatic.

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 70% of the weight; add with ground spices or sauce bases rather than hot oil tempering, where it scorches quickly and turns bitter.

Use equal weight for oil tempering. Delivers an earthy profile with an additional musky, smoky, and slightly bitter edge.

Use 60% of the weight for tempering; offers comparable warm aroma, but leans sweet and liquorice-like rather than savoury and earthy.

Use the same weight; it is less sharp and more floral, so add a little extra lime juice if the dish needs tang.

Use 1 leaf for 1 tsp lime zest in curries; bruise and simmer whole, then remove. It gives aroma but not acidity.

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 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.