●1 gallon 2% milk (“Skim milk works, but the yogurt will not be as thick. Whole milk makes the yogurt even thicker and richer.”)
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●1 cup plain, or vanilla, store-bought yogurt (“You’ll need this as a starter because it has live yogurt cultures.”), OR 1 cup yogurt saved from your last batch of Slow-Cooker Yogurt
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●Up to 1 full packet powdered milk (packet size to make 1 quart), optional (for thickening)
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●Up to 2 Tbsp., or 2 packets, unflavored gelatin, optional (for thickening)
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●Up to 5 Tbsp. vanilla, optional (“This is for flavor. My basic formula is 1 Tbsp. vanilla per quart of yogurt, but you can be flexible with this.”)