Non-Fat Yogurt

By Jan_C

Ingredients

• 1 quart (946ml) milk (any kind but if you use "ultra-high pasteurized" or "UHP" or "UHT" then you can skip step one, as the milk has already been heated to this temperature before the pack was sealed)
• 1/4 to 1/2 cup non-fat dry milk (optional)
• 2 tablespoons existing yogurt with live cultures (or you can use freeze-dried bacteria instead)
• 1 tablespoons white sugar to feed the bacteria
• pinch salt (optional)

Details

Adapted from keeperofthehome.org

Preparation

Step 1

Step 1: Turn your crock pot on low to let it heat up. It is important to remember to do this step first so you don’t forget, and so the crock pot is the right temperature when you’re ready to add the milk. Also, take your yogurt starter out of the fridge so it can warm up a little before you add it to your milk.

Step 2: Pour your milk into a saucepan and heat over medium heat, stirring occasionally until it reaches 185 degrees. (I have used a candy thermometer I got for $10). You can choose the amount of yogurt that you want to make at a time - I usually make 6-8 cups of yogurt per week. Be careful not to let the milk burn on the bottom of the pan during this step, and also make sure the milk doesn’t boil over – so stir often and keep an eye on it.

*Tip: I have stopped checking the temperature during this step. It’s just one less thing to have to do. When the milk starts getting bubbly and frothy (or it boils over onto your stovetop) you know it’s done.

*During this step I usually get ready for step three by getting the sink of cold water ready.

Step 3: Once milk reaches 185 degrees (bubbling) remove from burner, cover with a lid, and place the pan in a sink half full of cold water. (This is kind of obvious, but make sure the water doesn’t go over the top of the pan, just part way up the sides.) You can add ice to the water as well, but I’ve found that it doesn’t really cool the milk down any faster.

Step 4: Let the milk cool down, stirring occasionally. Once milk has reached between 90 and 110 degrees (I’ve read different temps here, I usually do about 100 degrees), remove pan from water. This usually takes just about 10 minutes for me, so set your timer, so you don't forget and the milk gets too cold.

*Tip: You can also do this step without a thermometer. After washing my hands, I stick my pinkie into the milk. If it's painfully hot to the touch, I let it cool a bit longer. If it's very warm, but not painfully hot, it is about the right temperature.

Step 5: Measure yogurt starter into a bowl (I use glass) and pour about a cup of the warm milk over it and stir together. Use 2 Tbsp of yogurt starter per 4 cups of milk. Meanwhile pour remaining milk into heated crockpot. Pour milk and yogurt from bowl into the crockpot and stir it all together.

Step 6: Put the lid on, turn off, and unplug the crock pot. Wrap a heavy towel around it. Let sit for 6-10 hours. (I usually do around 8 hours).

Step 7: After the yogurt has finished culturing, place the crock in fridge to cool yogurt. I have found this step to be really important because it helps the yogurt to set better. Since I started doing this my yogurt has been nice and thick and creamy. Don't stir or shake your yogurt, it needs to be disrupted as little as possible in order to set well.

When your yogurt has finished cooling and set, you can ladle it into a glass jar to keep in your fridge. I hope you can tell in the picture that this is finished yogurt, it has set, and is definitely more "solid" than milk. I have found that yogurt will keep for at least 7-10 days, and often it's still good at around 14 days, if there's any left of it by that point.