yogurt pot , made by blender, a very simple model .

Curd is a traditional yogurt or fermented milk product, originating from the Indian subcontinent, usually prepared from cow's milk, and sometimes buffalo milk, or goat milk. It is popular throughout the Indian subcontinent.The word curd is used in English to refer to homemade yogurt,[2][3] while the term yogurt refers to the pasteurized commercial variety known as heat treated fermented milk.