‘Idli’ is fermented steamed cake of rice and dehulled blackgram dhal produced in India. Lactic acid bacteria such as Lc. mesenteroides, Lb. delbrueckii, P. cerevisiae, E. faecalis and L. lactis are responsible for pH reduction and may hincrease the hiamin and riboflavin content (Lewis and Johar,1953; Mukherjee et al., 1965; Rajalakshmi and Vanaja, 1967). Yeasts also contribute to the fermentation. ‘Nan’ is leavened flat sourdough bread with a central pocket now prepared worldwide. Organisms involved in the fermentation include Saccharomyces yeasts and lactic acid bacteria, particularly Lactobacillus species.