Idly dough when kept in room temperature at summer day it will spoiled and become unfit for eating. Its odour and taste would become unpleasant and hence it would no longer be safe for eating. This is because the room temperature in summer day is very suitable for the growth of micro-organisms. The moisture content and temperature conditions are very appropriate for their growth, which thus spoil the food.
It fermentates when it is kept at room temperation at sunny days
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