01 - Pour milk into a saucepan and heat over medium heat, stirring occasionally, until it reaches 180°F. Monitor temperature carefully to prevent scorching.
02 - Remove saucepan from heat and allow milk to cool to 110°F. This temperature is optimal for activating the live cultures.
03 - In a small bowl, whisk together 2 tablespoons of cooled milk with the plain yogurt starter until completely smooth.
04 - Pour the starter mixture back into the cooled milk and stir gently but thoroughly to distribute evenly.
05 - Transfer mixture to a clean container, cover, and wrap in a towel or place in yogurt maker. Let culture undisturbed in a warm place for 6 to 8 hours until set.
06 - Line a strainer with cheesecloth and set over a bowl. Pour yogurt into strainer and refrigerate for 1 to 2 hours until desired thickness is achieved.
07 - Transfer thickened yogurt to a clean airtight container. Refrigerate until ready to serve.