The ‘unused kneaded flour’, if left in warm conditions, gets infected by microbes which cause fermentation and spoils the flour. The pooris would remain in relatively good condition because they were deep fried in heated oil that kills microbes.

The ‘unused kneaded flour’, if left in warm conditions, gets infected by microbes which cause fermentation and spoils the flour. The pooris would remain in relatively good condition because they were deep fried in heated oil that kills microbes.