HI
I've made raw yoghurt. At least it's concistency is closest to yoghurt. You take raw milk and heat it just so that it's warm to the finger, not steaming, below 118 degrees. Then take a jar and spread a teaspoon or more reg. yoghurt around the inside. Pour the milk in the jar, close it with a plastic top , place it in a brown paper bag and place it in a warm spot, like on top of the fridge, next to the heater. It should be done after 24 -48h, wait a bit longer if it hasn't formed a solid structure. It might just be to cold.
Lilly