Getting khandvi right is considered a test of a cook's hand speed — the gram-flour batter has to be spread and rolled while still hot, because it turns too stiff to shape within about a minute of cooling.
A thin gram-flour and yogurt batter is cooked down until thick, spread in a fast, even layer across a flat surface, and rolled into tight little spirals while still warm, then finished with a mustard-seed and curry-leaf tempering and grated coconut. Gujarati farsan shops sell it by the plate as a light snack alongside dhokla and khaman.