Amritsari macchi is bite-sized fish coated in a tangy gram-flour batter and deep-fried until crisp. It tastes sharp from vinegar and yoghurt, warm from ajwain and chilli, and rich from the fried crust.
Put 300 g white fish fillet in a bowl. Add the turmeric marinade (1.5 g ground turmeric), 15 g of the 45 g malt vinegar and salt to taste; mix and leave to marinate.
Pound 16 g fresh ginger and 6 g garlic to a paste with a pestle and mortar.
In a bowl, combine 30 g chickpea flour, 2 g baking powder, 0.5 g coriander leaves, salt to taste and the batter spices (1 g ajwain seed, 2.5 g kashmiri chilli powder or mild paprika).
Add the ginger-garlic paste, 15 g greek yoghurt and the rest of the 45 g malt vinegar; stir to a thick paste with no dry pockets.
Spread the paste over the fish pieces and leave for 10–15 minutes.
Heat oil for deep-frying to 170°C (338°F). Fry the fish in batches until the edges are crisp and the coating is golden; lift out and drain.
Sprinkle with chaat masala or lemon juice to taste and serve warm.
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% 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 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.
For crisping batters or binding cutlets: use 50% to 60% of the weight. Produces a very crisp shell but lacks the earthy, roasted nutty flavour of besan.
Use 25% of the baking powder's weight (e.g. 1 g for 4 g) and add 2 g cream of tartar or 1 tsp lime juice per 100 g flour. Mix quickly and bake at once.
Use about 1 g amchoor for 10 ml lemon juice, or 1 g for 2 g chaat masala. It gives dry mango sourness without salt or spice; add a pinch of salt and cumin if the chaat masala was doing more.