Preparation:

• Drain all water from yogurt. Keep aside.
• Boil milk until half.
• Let the milk cool until warm.
• Whisk yogurt and milk with a spoon.
• Pour the warm milk into hotpot.
• Cover the lid and keep aside for 6-8 hours or over night.
• Don't touch at that time.
• Once the yogurt set then open the lid.
• Enjoy!

Notes:

• You can also make sweet yogurt in the same process.