Living here in the northeast US, it can be difficult to set yogurt in the cool weather and a drafty house. A friend of mine from Delhi shared a foolproof way to set yogurt. After boiling the milk and doing the *pinky test*, pour it into a stainless steal container with a tight fitting lid, add the starter yogurt, whisk well and then - here's the key- put the lid on tightly and place into a microwave, closing the door. Do NOT put the microwave on, just let it provide a close airtight enviroment for the warm milk in the metal container to sit overnight. If you do this exactly.....I PROMISE perfect yogurt in the morning. I've done this twice a week for almost a year and only got one failure when i knew the milk was still too hot but tried to hurry it. By the way.....has anyone tried adding some *chunky chat* masala to yogurt with some grated cucumber? The masala makes it irresistable!! enjoy!!