If I’m being honest, yogurt has historically weirded me out a bit. Among other things, this is likely attributed to a wariness of dairy prompted by a babysitting experience in middle school during which I unknowingly opened a sippy cup of curdled milk sitting out. However, I stand by the rule that you “can’t knock it til you try it, and try it again” when it comes to new foods and have come to enjoy plain greek yogurt mixed with a little fruit. The great thing about plain yogurt is you can add whatever you want to it and not have to accept the loads of sugar packed into pre-flavored varieties. If you truly consider yourself a purist, you can take this a step further and just straight up make yogurt from scratch. Not only can you control the sugar content, but you also have the final say in the source of milk.
For those who are specifically in to greek yogurt, you make your own by simply straining regular, off-the-shelf plain yogurt. However, if you’re feeling adventurous and have some time on your hands, you can make your own yogurt with little more than a jug of milk as outlined here.
I’ve done this twice now – once with whole milk and once with lowfat. As might be expected, the whole milk makes a creamier, richer yogurt, but both kinds work perfectly fine for the process. Shoutout to my roommate, Hannah, for being totally cool with me setting a slow cooker wrapped in a towel out on our counter overnight & later occupying a fair amount of counter space with bowls of straining yogurt. She’s the real MVP.
The yield is dependent on how thick you like your yogurt. Greek yogurt is thicker than regular yogurt because it has more whey liquid strained out of it. This “more concentrated” yogurt explains the higher protein content of greek vs. regular yogurt. The thicker the yogurt is made, the less it will yield, but conservatively estimate half of the milk volume initially put in (ie. 1 gallon yields 8 cups yogurt). If you’d like to make more or less yogurt, the recipe is easily scaleable – just adjust the milk & yogurt starter proportions accordingly.
Homemade Greek Yogurt
Makes 8-10 cups
Ingredients & Materials
- Slow cooker
- 1 gallon dairy milk
- 1 cup plain yogurt with cultures
- Food-grade thermometer (instant read, meat, candy, etc)
- Large towel
- Colander + large bowl + straining material
- Pour milk into the slow cooker, cover, & heat on high until the milk reaches 180°F. This could take anywhere from 2-4 hrs depending on your pot & quantity of milk. (It took 2 when I used a half-gallon, but closer to 3.5 with a full gallon the second time around). This temperature is apparently the threshold required for the milk to properly thicken.
- Turn the slow cooker off and wait for the milk to cool to 110°F. Again, this could take another 2-4 hours.
- Once the milk has cooled, remove approximately 1 cup and combine with the plain yogurt. Stir carefully (not vigorously) until thoroughly mixed. Add back to the slow cooker and once again stir carefully (strokes instead of circles) until well combined.
- Replace cover & wrap the slow cooker in a towel and let stand for 10-12 hours. This is when the magic happens. You could go to bed with a swaddled slow cooker of warm milk sitting on your counter and wake up to a swaddled slow cooker of yogurt – how about that?
- Strain the yogurt by placing a colander over a bowl and lining with straining material. I’ve used both coffee filters & paper towels, though I think a nut bag or fine mesh strainer would probably be ideal. Fill with the thin yogurt mixture and let stand until it reaches near your desired consistency. I found that, once refrigerated, the yogurt thickens a bit more, so don’t worry if it’s not quite as thick as you’d like it when standing. Again, this is another 2-4 hour process depending on your consistency preference.
- Scoop out & store your yogurt. I imagine it would keep for a few weeks in the fridge, though mine absolutely will not last that long seeing that I’ll eat it first. Be sure to save some to use for the cultures in your next batch of yogurt, kind of like Amish friendship bread I suppose. I’ve set some aside in a separate container so I don’t forget and eat it all…
So yes, it takes a little while, but requires little effort. If you start around 4 pm, you should have fresh, homemade yogurt by lunchtime the following day.
Slow Cooker: A fantastic, common thrift store find. I have a 6 qt. Crock-Pot that I got from the repackaged clearance endcap at Target a while back, but have seen them frequently at secondhand shops. If you find one with a tacky, outdated pattern on the outside, consider repainting with chalkboard paint – it’s great for potlucks!
Straining Material: There are a lot of options here. Since part of my goal for the year is to not buy anything new, I’ve been testing out materials I have around my apartment. Coffee filters were sturdier than the paper towels – I was afraid I would tear the paper towel when scooping out the yogurt once it was finished. Ideally, I think a nut bag or other fine mesh strainer would work nicely.
Whey: The question remains: “what should I do with the strained whey from the yogurt?”. To be honest, I haven’t done much but let it sit in my fridge looking like a jar of lemonade, but apparently there are a number of uses. If you’re into smoothies, you can add it there, or use it (to some extent) in soups & baking. Here are 18 ways to use whey that may come in handy.