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Step-by-Step Tutorial
PRACTICAL WALKTHROUGH · PARAMETERS · COMMON MISTAKES
Dosa and idli batters undergo spontaneous mixed fermentation of starches by lactic acid bacteria and yeasts, producing acids and CO₂ that leaven and flavor the batter.
Origin: South Indian (Traditional) — South India
See full technique reference →During fermentation, Lactobacillus spp. convert available sugars to lactic acid, lowering the pH and inhibiting spoilage organisms, while Saccharomyces cerevisiae metabolizes sugars to CO₂ and trace ethanol, creating a porous crumb. The interplay of acidification and gas production defines the batter’s texture and characteristic mild sourness.
Primary Reaction
Starch → Lactic Acid + CO₂ (by LAB) + CO₂ + Ethanol (by yeasts)
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