Dosa — Batter Fermentation and Spread Technique (डोसा)

Dosa is the fermented rice-lentil crepe of South India — a thin, crispy-on-the-outside, slightly soft-on-the-inside flatbread made from batter of parboiled rice and urad dal (black lentil without husk) fermented overnight. The batter's 3:1 rice-to-lentil ratio and the overnight lactic acid fermentation are where the dosa's flavour and texture originate — the fermentation produces carbon dioxide (creating lightness in the batter) and lactic acid (providing the characteristic sourness). The tawa temperature calibration and the specific spiral spreading technique determine whether the dosa is paper-thin and crispy or thick and soft.