Boil Milk in a LARGE heavy bottom pot as the milk might overflow when boiled. Stir occasionally to prevent it from burning at the bottom.

Bring to a fell boil. At this time the thermometer should read 200F.

Move from stovetop and let it cool.

When milk cools down and shows a temperature reading of 130F, add the yogurt culture.

Whisk it really well till frothy on top.

Wrap in a clean towel and keep in OVEN, WITH OVEN LIGHT ON, OVERNIGHT

Do not disturb.

Next morning you should get perfectly set yogurt.

Store in refrigerator and serve cold.