Does anyone make their own yogurt?

[Phoenix61]

1. I have made a lot of it using a small cooler

and 4 1-qt wide-mouth mason jars. I add 1/4 cup dry milk to the milk for every quart. I have some very old yogurt strainers and use them. I get 2 qts Greek style yogurt from 1 gallon regular. I think the coffee filters will be too solid. A couple layers of cheese cloth in a metal mesh strainer would work better.