Kanji vada

Lentil dumplings in mustard water

Around Holi, glass jars of cloudy water sit on rooftops across Jaipur, Jodhpur and old Delhi, fermenting in the spring sun. That water is kanji: boiled water with ground mustard seed, salt and chilli, which turns sour, pungent and faintly fizzy in two or three days. Small moong dal fritters are soaked in hot water to soften, then dropped into the kanji, where they drink up its tang and turn spongy. Served chilled in clay kulhads with a vada or two in each, it is a cooling, appetite-sharpening drink-snack that cuts through the rich Holi sweets. Ferment only in a clean, sterilised glass or ceramic jar, stir with a clean dry spoon, and discard the batch if you see mould or it smells rotten rather than pleasantly sour. Chef's tip: grind the mustard seed coarsely and fresh; pre-ground mustard powder goes bitter and dull.