- 2 litres of cow’s milk I recommend full-fat
- 1/2 cup milk powder
- 1/2 cup plain yogurt again, I recommend full-fat
Turn the oven on to 200° F, then turn it off.
Heat the milk in a heavy-bottomed sauce pot over medium heat. Whisk regularly until the temperature reaches 180° F. Whisk in the milk powder then immediately place in a cold water bath and whisk until the temperature reaches 115° F.
Whisk 1/2 cup of plain yogurt into the pot of milk. Cover the pot and wrap in a bathroom towel. Turn on the oven light* and place it in the oven for 8-12 hours. (Make sure the oven has been turned off!)
Once the yogurt has fermented it will be set but still a bit runny. To make this into Greek-style yogurt you need to strain off the whey. Place a square of folded cheesecloth in a strainer and set it over another pot. Pour the yogurt in and let stand until 2-3 cups of whey have drained.
Once your yogurt is the consistency you like; it pour it back into the pot and whisk smooth. Scoop it into jars or a plastic container and refrigerate. Depending on the freshness of your milk this should keep for around 2-3 weeks.
Leaving the oven light on keeps the temperature just warm enough to maintain the proper environment for the culture to grow. As to the whey you strained off, there are several uses for it. You can use it in place of buttermilk in baking recipes, in bread recipes, in cheese sauces as a cultured liquid to add flavour, or even as a protein liquid for smoothies since whey powder is one of the most popular protein powders available. Have a “Super, Natural” Day! Kevin