I know you didn’t ask for it but I’m really excited about what I’ve been up to so here’s the process: Heat milk to 180-185f basically right as it starts to foam, let it cool to 110, mix in a spoonful of yogurt (I started with store ought Greek then keep a starter from each batch to make the next), let it sit somewhere warm for 6-24 hours. The oven with the light on works well enough but there are lots of options. Then bam you’ve got more yogurt! I like to whisk mine to make it a bit smoother and I’ve been having a glass every morning with some cherry juice