Follow this step-by-step guide from Food Network on how to make your own yogurt.
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Did you know you can turn a tablespoon of your favorite cultured yogurt into a whole quart? The process is simple, and it requires tools you probably already have in your home. To start, you'll need at least 1 tablespoon plain, unflavored yogurt with live cultures, 1 quart milk (low-fat is fine, but avoid ultra-pasteurized), a quart Mason jar, a cooler, a medium saucepan and a thermometer.