Curd or dahi is a dairy product which is made by curdling milk with edible acidic substance like lemon juice, vinegar and even curd itself. ... Yogurt, on the other hand, is created by bacterial fermentation of milk. To make yogurt, yogurt culture consisting Lactobacillus bulgaricus and Streptococcus thermophiles is used.

What is yogurt called in India?

In India, yoghurt is 'dahi' . Most Indians are confused because in India,the commercial name of yoghurt is 'curd' at most places.

Can I use yogurt instead of curd?

Yes - Full fat whole milk Greek yogurt works well. What are you trying to make? Plain yogurt is a very good substitute for curd. It taste exactly the same as curd.