[header] How to make yogurt by machine [title] Find out how much milk you need from the instructions with the machine. [step] Use whole , 2% , 1% or skim milk and add 1/4 cup powdered, dry milk for each quart. Heat that amount of milk your yogurt maker will hold in a crock pot on low overnight. 
You can do the same thing on your stove in a double-boiler. Bring it to the froth stage or between 180-200f.