Curd and yogurt are both fermented milk products, but they differ in preparation and bacteria used. Curd is made by adding a small amount of existing curd or a natural acidic substance to warm milk, allowing naturally occurring bacteria to ferment it. It is common in India and varies in taste and texture. Yogurt is made using specific bacterial cultures, mainly Lactobacillus bulgaricus and Streptococcus thermophilus, under controlled conditions. Yogurt usually has a smoother texture, tangier flavor, and more consistent probiotic benefits. While all yogurt is a type of curd, not all curd qualifies as yogurt due to differing bacterial cultures and production methods.
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