I'm making my own yogurt today. I make it with my own culture, which I've kept going from some culture I ordered online. So my only cost is the gallon of fat free milk (abbreviated FF milk, so I call it "loud milk."), and the honey I use to sweeten it.
I also drain a lot of whey out of it, so I end up with about a little less than half a gallon of yogurt, and a little more than half a gallon of whey. Which sounds wasteful, but I have a LOT of uses for whey, so I think of it as getting two products, not just one. I recycle the empty milk jug, and I don't have any other containers I need to recycle, as I use canning jars.
You do not need a yogurt maker. Don't let that be a reason not to make your own. If someone wants, I'll post my (somewhat lengthy) directions.
I used to take a jar of yogurt to work and stand my spoon up in it. I show it to coworkers and say, "Can your yogurt do this?" Then I'd turn the jar upside down and say, "Well, how about this?"
Yeah, I'm a bit of a smart aleck.
Uses for whey:
Mix with the chickens' feed to make their mash snack
Water blueberries or other acid loving plants
Cook rice
Make bread
Some people even drink it.
