Preheat Oven to lowest temperature setting, then switch off.
Add milk to sauce pan/stock pot
Heat milk to 110 degrees Fahrenheit, stirring occasionally.
Remove from heat.
Add one half cup of your starter yogurt culture to the milk.
Whisk thoroughly.
Cover the pot and wrap it in a bath towel.
Place your bundled up milk mixture in the oven.
Let it culture in the oven for anywhere from 8-12 hours. Check on it periodically. When it reaches the texture you want, it's done!