If you like Greek yogurt, read this post.
If you don’t want to be ruined on store-bought Greek yogurt, don’t read this post.
Warning: Once you realize how easy, inexpensive and way more delicious this yogurt is, you will be ruined on store-bought yogurt.
I had been wanting to make my own yogurt for quite some time and had researched a lot of recipes on different techniques. I think I settled on the most simple one. And no, you don’t need one of those fancy yogurt making machines that they sell for hundreds of dollars at the store. I simply used a pot, an inexpensive candy thermometer, my crock pot, cheesecloth, a strainer and a bowl. Most people probably own all of those things. I’ve already made it twice with great results and plan on making another batch this weekend.
Add 2 quarts(or however much you want) of milk to a sauce pan. Heat over medium-high heat, stirring occasionally until the temperature reaches 180F. What kind of milk? I have only used cows milk, but you can use any fat percentage that you want. The higher the fat percentage the thicker and creamier the yogurt with turn out. I have tried with a lower fat percentage and a higher fat percentage, both turned out great.
Once at 180F take the pot off the burner and let milk come down to a temperature between 110-120F. It is important to get the temperature in that range so that the bacterial cultures can work their magic. If the temperature is too high, they will be killed, if it is too low, they won’t incubate properly.
If you are using a pan with a tight fitting lid, you can move on to the next step. If not, I recommend using the ceramic liner part of your crockpot for the next step. Pour the milk into the inner part of your crock pot. Leave the outside metal part in your cupboard.
At this point, take a couple of spoon fulls of store-bought plain Greek yogurt. I have used Fage and Chobani. They are two of the more pure brands on the market. Under ingredients, you want the bacteria listed but not much other junk. No gelatin or pectin or fruit or fake sugar. Stir the store bought yogurt into your milk. The yogurt is the starter to make more yogurt.
Next, preheat your oven to any temperature for one minute. Shut off your oven. Wrap your covered pot full of warm milk and a few spoonfuls of yogurt in a large beach or old bath towel. Put in your turned off oven for 8-12 hours. By turning on your oven for one minute and then shutting it off, it helps to take the chill out of the air and keep your yogurt in the temperature range that you want for the bacteria to work it’s magic. A lot of sites recommend turning on the light in your oven for a little extra heat. My oven is so old that it doesn’t have a light in it and I had no trouble making the yogurt without a light. It’s probably also a good reminder that you have something in your oven so you don’t absent mindedly turn it on and start the towel on fire.
After 8-12 hours, your milk should look much more like yogurt than milk. Much like this:
If you stir it all up at this point, you have runny yogurt. Which if fine, if you like that sort of thing. Congratulations. Put it in the fridge and you are done.
If you are like me and like a thicker and creamier yogurt, you will want to do this next step. Use a fine mesh strainer or a colander lined with cheese cloth set up above a larger bowl. Pour your yogurt mixture into strainer and let the excess liquid strain into the bowl below it. The excess liquid is known as whey. Some people save it and use it. I pour it down the drain. Place straining contraption in the refrigerator for 2 or more hours.
When you come back, you will have a fair amount of whey in the bowl and a much thicker yogurt on top. Whisk or stir the yogurt a little to smooth it out. Move the yogurt to storage containers and refrigerate. The yogurt lasts for about a week.
Your yogurt will taste like a tart, unflavored yogurt. You can add a tablespoon of vanilla(to a 2 quart batch) to make a nicely flavored vanilla yogurt. You can also add in sweetener at this point, if that if your type of thing. I have added vanilla and it tastes great.
How much cheaper is this than store-bought? Well, you can make two batches like this out of a gallon of milk and one small container of store-bought Greek yogurt(about $4 total). It will make the equivalent of about 4 large containers of store-bought Chobani or Fage (about $5 each x 4= $20). I would say that is a pretty significant savings over time.
Since there is a lot of downtime on this recipe, this is the time frame that I like to do it in: I will heat the milk and let it incubate the 8-12 hours over night. A great time as I know I won’t need to use my oven again. When I get up in the morning, I strain the yogurt and leave it straining while I am at work. You can do it all during the day, but I don’t like having my oven tied up all day and unable to use it.