Curd can be made by 3 ways but we need the starter or Jaman which we can make at home without Store Curd.

Ingredients to make Jaman or starter
Milk 500ml
2 green chillies with stem
2 deghi mitch with stem
2 tbsp lime juice

Ingredients to make curd
1000ml milk(1 litre)
And use the above any 2 starter or Jaman each 2 tbsp.