North Indian street food tradition — associated with the chaat culture of Lucknow, Delhi, and Varanasi
Chaat masala is not a spice but a flavour technology — a sour, salty, slightly sulphurous powder made from amchur (dried mango powder), black salt (kala namak — containing iron sulphides and hence an egg-like sulphur note), cumin (roasted and ground), black pepper, dried ginger, and optionally dried mint. It functions as a finishing condiment sprinkled over everything from fruit to fried snacks to yoghurt preparations, adding a specific tangy-mineral dimension that no single component can provide alone. MDH and Tata brands are the commercial standard references. Making chaat masala at home requires sourcing kala namak — without it, the preparation is simply amchur-spiced salt.
Sprinkled over chaat, fruit, roasted chickpeas, yoghurt preparations, pakoras. A few grams change the character of any preparation it touches.
{"Kala namak (Himalayan black salt — actually pink in solid form, pale grey when powdered) is the irreplaceable flavour compound","Dry-roast cumin and coriander before grinding — pre-ground versions lack the toasted depth","Amchur must be the dominant sourness — at least 40% of the blend by weight","The blend should be pungent and sharp on the nose — if it smells mild, more kala namak is needed","Store airtight — the sulphur compounds in kala namak evaporate and the amchur absorbs humidity"}
The professional chaat masala technique is to add a pinch of asafoetida (hing) to the blend — this amplifies the umami quality of the kala namak and creates the specific 'Delhi chaat' character recognisable even through heavy yoghurt and tamarind. This is the detail that distinguishes market chaat from home chaat.
{"Substituting table salt for kala namak — produces a flat, non-sulphurous blend that lacks the mineral depth","Adding too much cumin — the blend becomes cumin-dominant rather than the intended sour-salt-complex","Using citric acid instead of amchur — produces a sharper, less rounded sourness"}