How to make a yogurt in a yogurt machine?

Your correct, I had one years ago, just make sure you use a natural yougart, not with any gelatin or sugar in, let your milk come to room temparture and whisk the yourgart in, and the set the cups in the machine, I worked with a Greek chef and all he did was heat the milk to blood temp, add the yougart, and put in teacups, cover it with Saran Wrap and keep it in a warm area overnight, on top of a frig near the back, and after 2 hours in the frig next day it was solid, if you want a firmer product, you will need to add some whole milk or light cream. I like Balkan style and here in Canada with have a product from a dairy called Astro, it is 4% BF and is great as a sour cream substitude.