Homemade Plain Yogurt
Heat milk in a large saucepan over medium-high heat, stirring frequently, until it is steaming, barely bubbling and registers 180 degrees F on an instant-read or candy thermometer. (Do not leave unattended--it can boil over very quickly.)Advertisement
Carefully pour the milk into a clean, heat-safe 5- to 8-cup container. Let stand, stirring frequently, until cooled to 110 degrees F. Combine yogurt with 1/2 cup of the 110 degrees milk in a small bowl, then stir the mixture back into the warm milk.
Cover the container and wrap in a clean kitchen towel to help keep it warm. Place in a very warm place (see Tip) and let stand, undisturbed, until thickened and tangy, at least 8 hours and up to 12 hours. Refrigerate until cold, about 2 hours. The yogurt will thicken a bit more in the refrigerator.
Make Ahead Tip: Refrigerate for up to 1 week.
Equipment: 5- to 8-cup container with lid, thermometer
There are a few ways to create a very warm (about 110°F) environment for making yogurt. Oven method: Turn your oven on to 200° for about 5 minutes, then turn it off. Add the towel-wrapped container of yogurt and if you have an oven light, turn it on for added warmth. Cooler method: Place a hot water bottle (or other small container) filled with very hot water alongside the towel-wrapped container in a small cooler. Heating pad method: Wrap a heating pad set to High around the towel-wrapped container.