Turn on oven to lowest temperature and turn on light. Remove rack, so that only lowest rack is in oven and there is space for a stock/soup pot.
- 6 Tablespoons of Plain Greek Yogurt with live, active cultures
Set-out on counter to come to room temperature while you prep milk
- 2 quarts milk — I use organic, fat free milk (and my yogurt culture is also from fat free Greek Yogurt)
Heat milk gently, stirring frequently with a rubber spatula to prevent scorching, until temperature of 180-F is reached. I use a candy thermometer that clamps to the side of my pot, but you could use an immersible instant-read thermometer, too.
Once milk reaches 180-F, immerse pot into ice bath to cool milk. **Turn off oven, and keep light on.**
The pot of hot milk is so hot that it will melt all of the ice and heat-up the water in your ice bath pretty quickly, so I usually change the water in the ice bath at least once, and add more ice. I stir the milk with the rubber spatula as it cools. What I’m trying to avoid is the “skin” of cooked milk on the bottom of the pot.
Once milk cools to 110-F, remove from ice bath. Stir a ladle-full of 110-F milk into your 6 Tablespoons of Plain Greek Yogurt with live, active cultures that you have set-out on the counter to come to room temperature. Try to stir it as little as possible while incorporating the milk. Add 1 or two more ladles-full of 110-F milk until you have a very thick “yogurt-soup.”
Stir that “yogurt-soup” into your pot of 110-F milk and stir briefly to distribute throughout the batch of milk. Try to stir as little as necessary. Then cover the pot and put into the still-slightly-warm oven, and place covered pot as close to the oven light as you can (see below).
Shut oven door and do not open for at least 6 hours. The oven light provides enough heat to incubate the yogurt. I let my yogurt incubate for up to 8-9 hours. When I remove it from oven, I have pot full of thick yogurt:
To make Greek Yogurt, gently add it by the ladle-full to this fine-mesh strainer and then put in refrigerator for 4-8 hours. The duration of the time you strain it determines how much whey you strain out … and, thus, how thick your final yogurt is:
(below) Strained yogurt — thick Fat Free Plain Greek Yogurt. With the whey reserved on the side. **Before you consume all of this delicious homemade yogurt, reserve another 6 Tablespoons into a container and store in the fridge for your next batch!**
I Googled what can be done with whey and came up with this list. It tastes like buttermilk to me, so I’m currently developing recipes that use whey in place of buttermilk, milk or sour cream. Mr. Batch says that cookbook ought to be called, “Yes, Whey!” 🙂 Stay tuned for Orange Blueberry Bread, where I used whey instead of buttermilk/sour cream! Sooooo tasty!