I found this good yogurt recipe when I was going through my recipe file yesterday. Thought you might be interested.
4 C. Milk
1/2 c dry milk powder
3 -4 T fresh plain yogurt with live cultures
Make sure your equipment is dishwasher clean.
Mix powder into milk and heat in sauce pan to 180 degrees (scalding but do not boil.)
Take it off the heat and let it cool to 110- 115 degrees (warm).
Mix a little of the milk into the ygurt to smooth it and then pour it into the rest of themilk. Mix well. Pour into jars and put it into a picnic cooler surrounded by 115 degree water, cover and allow to set for 5-8 hours. You can also put it into a pan of water and put it in the oven (on off) or wrap it in a towel. Or you can put it into a thermos.
This will make a runny, unsweetened yogurt. You can add sweeteners and fruit to it after it is made. You can add knox gelatin to the milk and that will thicken it up some.