Question

why does curd turns sour faster in summer than winter?

Answer 1

milk converts into curd with the help of Lactobacillus bacteria.summer is the best season for bacteria to grow rapidly and in curd Lactobacillus bacteria produces more lactic acid in summer in comparison to winter

Answer 2

Curd turns sour faster in summer than in winter because during winter the temperature is low that led to slow growth of "Lactobacillus" bacteria crucial for curd. However, during summer the temperature remains high and the high temperature is a favorable condition for the faster growth of bacteria (lactobacillus). Consequently, Lactobacillus bacteria create more lactic acid in the summertime as compared to the winter season. This is why curd turns sour faster in summer.