Heat milk in a saucepan over a medium-low flame until it reaches about 110 F.
Remove from heat and whisk in the yogurt starter. Pour the mixture of fresh milk and starter into the yogurt maker and culture it according to the manufacturer’s instructions, about 8 hours or until it sets and smells pleasantly sour.
Serve plain as a sauce, combined with fresh fruit or nuts or sweeten it, if desired, with a touch of honey or maple syrup.