01 - Pour the milk into a saucepan and warm gently over medium heat, stirring occasionally, until it reaches 185°F. Do not allow the milk to come to a boil.
02 - Remove the saucepan from heat and let the milk cool to between 110°F and 113°F. Use a kitchen thermometer to monitor the temperature accurately.
03 - In a small bowl, combine the yogurt starter with a few tablespoons of the cooled milk. Whisk until smooth and fully blended.
04 - Pour the starter mixture back into the saucepan with the remaining cooled milk. Stir thoroughly to ensure even distribution of the cultures.
05 - Pour the inoculated milk into a clean container or divide among individual jars. Cover loosely with lids.
06 - Place the containers in a warm, draft-free spot — such as a turned-off oven with the interior light on or a dedicated yogurt maker. Let incubate for 8 to 12 hours, or until the yogurt has set to your preferred consistency and level of tanginess.
07 - Transfer the set yogurt to the refrigerator and chill for at least 2 hours before serving. Store refrigerated for up to 1 week.