What you need:
- cheesecloth (or very thin tea towel)
- large bowl
- homemade yogurt
Pour in the yogurt. Wait about 2-4 hours, depending on how thick you want your yogurt.
Discard the liquid whey in the bowl. (I've read that you can use whey rather than water when making bread. I need to try that in my homemade honey wheat bread!)
Scoop out the yogurt from the cloth, and enjoy your homemade greek yogurt!