Straining yogurt is a hassle. It's a messy, extra step that people use to get a nice, thick yogurt. But you don't need to do it! With this simple technique, you don't have to. My yogurt is always thick, delicious, and really hassle free. By the way, I have made yogurt without a kitchen thermometer, but it's much easier to be sure you are doing it correctly with this tool, so you might want to pick one up or borrow one from a neighbor before you get started. Also, you'll need a pressure cooker...