- 1 gallon non-fat milk
- 1 5.5-ounce container "Siggi's" plain or vanilla skyr
- 7 drops liquid animal rennet (or 4 drops liquid vegetable rennet)
- 1/4 cup warm, non-chlorinated water
Before beginning, thoroughly sanitize all of your skyr-making equipment (bowls, whisks, measuring cup, spoon, mesh straining bag) either by rinsing them in boiling water or by removing them immediately from a hot dishwasher.
Bring the milk to a slow and steady simmer over a medium-high burner, heating it until it reaches the scalding point (use a thermometer to ensure it reaches 185°F-190°F), about 15 to 20 minutes. Stir frequently to prevent scalding (if towards the very end of the heating process, you notice that the milk at the bottom of the pot has begun to scald, reduce the heat to medium-low and stop stirring. A small bit of scalding is o.k., but you don't want to release the scalded bits into the mixture).
Turn the burner off immediately when the milk reaches the scalding point. Remove from burner and allow to cool to 110°F.
Combine 1 cup of the cooled milk with the skyr, then return the mixture to the pot, stirring to incorporate.
Whisk the liquid rennet into the warm water, then stir immediately into the milk (the rennet will lose its effectiveness if prepared more than 30 minutes before using).
Cover the pot with a thick towel and keep in a warm, draft-free place (an oven or an insulated cooler) for 12 hours.
Spoon the curds into a fine-meshed bag (nylon vegetable bags work great for this!) or a double-layer of cheesecloth. Suspend the bag over a dripping tray in a cool room or the refrigerator and allow to drain until the skyr is thick.
Skyr will keep for 3 or 4 weeks, covered, in the refrigerator. To serve as breakfast or a snack, top with milk, fresh berries, and sugar or honey to taste (skyr is far more sour than overly-sweetened American yogurts). Or use it to make tangy and refreshing desserts like frozen strawberry skyr.
Per Serving: Calories 178, Calories from Fat 4 , Total Fat 0.4g 1%, Trans Fat 0.0g, Cholesterol 10mg 3%, Sodium 214mg 9%, Total Carbohydrates 25.0g 8%, Sugars 25.4g, Protein 18.4g, Vitamin A 20%, Vitamin C 0%, Calcium 64%, Iron 1%
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