What you need to Make Plain Yogurt? One Bag or one liter 2% Milk 3 spoons of Starter Yogurt Steel Container with lid or Glass container with lid. It is up to you, but I prefer to use Steel one. Boil one liter Milk in any Steel Pan and put aside to let it stay and become to room temperature warm only. It should not be too hot or not too cold. Just Warm as we drink