Aloo Matar ka Achar

Use equal weight. Cut into large chunks; cooks down much faster (10-12 minutes) and softens into the sauce rather than staying starchy and firm.

Use 80% of the weight. Cube and add in the last 5-10 minutes of cooking; adds rich dairy protein instead of starchy bulk.

Use 45% dry weight. Soak overnight and boil until fully soft before stirring into the sauce to simmer for 10 minutes.

Use equal weight directly from fresh or frozen. Toss into the pan near the end of cooking to preserve sweetness and bright green colour.

Use 70% of the weight, boiled until tender but holding shape. Adds pleasant body and starch, though it lacks the juicy sweetness of fresh peas.

Use equal weight. Finely grind whole black or yellow mustard seeds in a spice grinder; yellow gives milder heat, black gives stronger pungency.

Use equal weight, crushed to a paste with a splash of water using a pestle and mortar. Adds a similar sharp bite.

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 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 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.

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; 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 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.