Dahi Vada

Dahi vada belongs to the oldest documented layer of Indian snack cookery. The 12th-century Sanskrit encyclopedia Manasollasa, compiled at the court of the Chalukya king Someshvara III, describes a preparation the food historian K. T. Achaya identifies with dahi vada — lentil dumplings (there called kshiravata) soaked in liquid and dressed with curd spiced with pepper and other seasonings; earlier texts mention vadas steeped in soured rice water (kanjika). Whatever its exact antiquity, the soaking of fried lentil cakes in curd is a very old subcontinental idea that survives across regions under many names. In the north it is dahi bhalla; in the south thayir vada, perugu vada or doi bora; the spicing and finishing chutneys shift from kitchen to kitchen.

A spoon meets almost no resistance: the soaked vada has gone pillowy and waterlogged-soft, so it collapses into cool, tangy yogurt at the first press. The curd is mild and faintly sweet, the tamarind dark and sour-sweet, the green chutney herbal and sharp, and over it all sits the warm dust of roasted cumin and the salty, sulfurous tang of chaat masala. It is served cold; the contrast is creaminess and a hundred soft textures rather than crunch.

The texture turns on two things: aeration and rehydration. Skinned urad dal is ground with very little water and then beaten hard so air folds into the sticky batter — a spoonful dropped in water should float, the sign it will fry light rather than dense. The dumplings fry at a moderate 170–180°C so they cook through without a tough crust. They are then soaked in warm water, which lets the fried cakes swell and go soft and sponge-like; squeezing expels excess water so they drink up the curd instead. The yogurt is whisked smooth with a little sugar and salt to balance the chutneys' acid and the chaat masala's black-salt sulfur.