Bhunee Machhali

Use the same weight; richer and oilier, so cook 1–2 minutes less to avoid drying.

Use the same weight; milder, cook 1–2 minutes less and handle gently.

Use the same weight; similar flake, slightly sweeter. Cook until just opaque.

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 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 the same weight; nuttier and keeps better. Reduce salt if the butter was salted.

Use 80% of the weight; no dairy flavour and less richness. Good for frying, less good for finishing.

Use the same weight; adjust salt in the dish if your butter was salted.

Use 100% of the weight, finely minced or ground into a smooth paste. Provides sharp heat while preserving the light colour of delicate kormas.

Use 50% to 75% of the weight. It brings mild heat but will turn pale or white sauces noticeably orange-red.

Use 50% of the weight. Gives strong, sharp heat, but will stain cream-based or yellow Mughlai gravies red.

Use equal weight; peel and grate very finely on a microplane or pound to a fine paste in a mortar.

Use equal weight; mince finely and crush with the flat of a knife before frying.

Use 20% of the weight; add directly with the dry spice powders, though it yields an earthier, less pungent profile.

Use equal weight; crush or finely grate to a smooth pulp to replicate the same fresh, pungent moisture in your base gravy.

Use 20 to 25% of the weight; mix with a teaspoon of water before adding to oil so it does not burn, noting it lacks the fresh bite.

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 100% of the weight. Whisk thoroughly until smooth before stirring into warm gravies to prevent curdling.

Use 90% of the weight combined with 10% lemon juice to replicate the lactic tang and rich body in marinades and curries.

Use 50% of the weight mixed with equal parts ground coriander and a pinch of ground cinnamon, ground cloves, and ground green cardamom. Sprinkle near the end for a warming finish.

Use 75% of the weight. Simmer briefly in the gravy; imparts roasted warmth and complexity, though it adds a slight tang and earthy lentil undertone.