With all that said, here is the recipe for the yogurt I made. It is an excerpt from Ricki Carroll's "Home Cheese Making". Here's a link to more info on making yogurt from her website.
When I was finished, I decided I would use the yogurt maker in the future. Same ingredients just less hands on. The following is the "manual" method.
Equipment needed: Candy thermometer, non reactive (stainless steel) 3 quart or larger pan, glass container for storage, and if making Greek style yogurt: cheesecloth, rubber band, wooden dowel or spoon and large bowl.
1 quart any fat percentage organic milk (I used Organic Valley, whole milk)
1/4 cup milk powder, optional (used for thickening)
1 T. thickener as an option to using dry milk or in addition to, optional (such as carrageenan, pectic, or gelatin)
1 packet yogurt starter or 2 T. yogurt with live cultures
2. Let milk cool to 116 degrees F. Add starter, mix well.
4. Transfer to glass container, refrigerate and serve cold. This will keep, refrigerated, for up to two weeks.
5. If desired, keep 2 T. for the next batch. When it stops working, open a new packet of yogurt culture and start again.
Note: You can use store bought yogurt with live cultures in place of powdered yogurt starter.
Observations. tips, tricks, etc.:
A. In my kitchen, the time to cool from 180 degrees F. to 116 degrees F. was about 45 minutes. I later read on Ricki's website that the cooling process should be as quick as possible and stop a few degrees before 116 F. (around 120) to accommodate the drop in degrees when you transfer to another container. She was using some container with a heating element. I am using the oven warmer set to the lowest and then monitoring to make sure mix stays at about 116 degrees F.
B. Used half gallon of whole organic milk (twice the recipe) with just a 1/4 cup of dry milk powder.
C. I used store bought yogurt as starter. I used Fage (pronounced fa-hey) brand which I trust as an organically produced yogurt without chemicals or additives.
D. After 8 or so hours, poured yogurt into cheesecloth. Drew up four corners of cheesecloth and tied with rubber band. Attached to wooden dowel (can use anything long enough to span bowl) and placed over bowl to catch draining liquid making sure cheesecloth was suspended high enough to avoid touching dripping liquid.
E. Strained for another 12-24 hours to get "Greek" style very think and creamy yogurt cheese.
F. This is a very mild yogurt and tastes so yummy.