A.B.
It's crazy that i JUST made yogurt two days ago. I have tried a few different methods and this one worked beautifully. It is the most basic, easy to follow website.
http://makeyourownyogurt.com/
It focuses on using items you have at home. No special machines and the keeping it warm part is easy, a heating pad set on medium on a cutting board for at least 7 hours. I did the 7 and because our family likes the more tart flavor, we will leave it longer next time. I sweetened it with a touch of splenda, you can use sugar, honey or nothing. I then added about 2 teaspoons of vanilla extract to a gallon of yogurt. This way it is ready to eat plain, with some fresh fruit and walnuts. ( go to www.realage.com to see the benefits of plain raw walnuts.) If you find your milk on sale ( $3.49 / gal. at Walgreens) it works out to be about $0.25 per 8 oz cup as opposed to at least $0.50 per cup that is full of junk and not as many probiotics. I just added a full cup of plain yogurt. I added about 5 capsules of pro-biotics to my yogurt for the added benefit. I know those 5 capsules grew tremendously. It is GREAT frozen with berries in those popsicle makers. Sometimes for a treat, I will put a teaspoon of strawberry jam in the center and as the kids are licking away it has a tremendously sweet center. Better than ice cream I think. Have fun, save money and teach the kids. My 7 year old read the instructions and was amazed at how yogurt was made. He still telling people about the process days later.