Perfect Plain Low-Fat Yogurt
An extra boost of skim milk powder is added to this all-purpose recipe to increase the proteins in the mixture for a thicker yogurt. Be sure to use instant skim milk powder, which completely dissolves in the milk.
1. Heat milk to scalding point (170°F; 77°C) in saucepan over low heat, stirring frequently. Whisk in skim milk powder, if using. Remove from heat, and let cool 30 minutes to 1 hour, or until milk temperature reaches 110° to 120°F (44° to 49°C) on instant-read thermometer, stirring once or twice.
2. Whisk together yogurt and 1/2 cup cooled milk in bowl. Whisk this mixture into remaining cooled milk. Pour into clean container(s), secure lid(s), and place in yogurt maker. Set timer for 8 to 10 hours. (The longer yogurt ferments, the firmer its texture and tangier its flavor.) Check 1 container after 8 hours; if yogurt has reached desired tartness and texture, remove cups from yogurt maker, and refrigerate. If not, replace test cup, and continue to ferment 1 to 2 hours more. Chill completely before serving.