Quote:
Originally Posted by Missy Krissy
Kaplods, I am curious, how do you make your own yogurt?
|
It's very simple.
Only two ingredients. Milk and about a tablespoon of plain yogurt (either from a prior batch or from a store-bought live-culture yogurt).
I like using Oikos or Chobani unflavored greek yogurt as my starter culture.
Materials
Crock pot (I use a 4 qt crock pot)
thick blanket or large bath towel.
heating pad (like for sore muscles)
digital thermometer with alarm (mine doesn't have a cool-down alarm feature - wish I'd bought one that had it, but it's not a big deal).
Ingredients
milk or combination of milk and cream (any fat percentage, even skim, and regular store-bought milk is fine too. I've read you can even use instant milk reconstituted with water, though I haven't attempted it). From what I've read, the ultra-pasteruized kind often doesn't work well - this is the stuff that doesn't have to be refrigerated.
I haven't tried skim or 1% yet, but that will be my next batch.
1. Pour milk into crockpot. leave at least an inch of headroom, so that the milk doesn't boil over easily (I fudge this a bit, as I'll use a whole gallon in my 4qt crockpot, but when I do, I usually end up spilling a bit of the milk. You can use any amount of milk, and any size crockpot).
2. Turn crockpot on high and set digital alarm for 190 degrees, put probe into milk and put lid on (the lid will hold the thermometer in place). Crockpots vary, but mine takes about 3 to 4 hours this way (depending on whether I use 2 or 4 quarts of milk).
3. When the alarm sounds, turn off the alarm, but leave the thermometer in place. Unplug the crockpot (you can also remove the crock from the heating element if you want, as it will cool faster. I don't bother).
4. Check the temperature after an hour and then about every 30 minutes until the temperature reads somewhere between 100 and 120 degres. You want it under 120 degrees, because otherwise the yogurt bacteria will not survive. I always aim for around 115 degrees.
5. With a clean measuring cup or ladel, dip out about a cup of the warm milk into a small bowl and whisk in about 1 - 2 tablespoons of yogurt (the exact amount isn't important, but less actually works best. Supposedly using more can make the yogurt bitter. I've used everything from a tablespoon to a cup of yogurt in my batch as starter, and haven't really noticed a tremendous difference, though I would agree that the flavor and texture actually is better on the low end of the spectrum so now I don't ever use more than a scant quarter cup).
6. Stir the yogurt mixture back into the pot. Stir well with a spoon or whisk
I wasn't using step 5 in my first batches. I would just add the tablespoon or so of starter and only stirred a couple times. My yogurt was then very thick on top, and thin on the bottom. I searched online to find why, and it turns out that I wasn't stirring the yogurt starter in thoroughly enough so steps 5 and 6 are really important.
7. Plug in your heating pad and set it on low. Unfold the towel and set it on the heating pad. Set the crock pot onto the towel (which is on the heating pad).
8. Reset the thermometer 115 degrees (make sure it's still in the milk. Sometimes all the moving from counter to towel with dislodge the thermometer).
9. Wrap the crock with the thick towel or blanket, and leave undisturbed for at least 5 hours (and up to 36 hours). If the thermometer alarm rings, turn off the heating blanket for a while.
10. Scoop out a few tablespoons of yogurt to put in a small covered container to use as starter for the next batch. You can also freeze it (I haven't done this yet. I've frozen my first starter batch with my last batch. I'm a little hesitant to use frozen yogurt as starter, but most folks who've done so have had success with it).
11. Put the crock into the fridge and scoop out with a clean ladel as you need it. Or pour the yogurt into container or containers to put in the fridge.
The longer it sits, the tarter the yogurt will be, and the less lactose it will have. Supposedly all of the lactose is used up around the 24 hour mark so if you let it sit for 24 hours or more it's supposedly safe for those who are lactose intolerant - I've never done this. The longest incubation I've ever done is 12 hours (and it's still not all that tart then).
I prefer a 5 hour yogurt.
There are many other ways to make yogurt and so if you google online you can find other ways (most are variations in how you get and keep the yogurt at the temperature you want, rather than major differences. The main component is always heat milk to sanitize, then cool milk to a comfortable temperature for the yeast, and keep it warm while it incubates (90 to 115 degrees).
Some people say that you don't need the heating pad, a thick blanket will keep the crock warm enough. I always use the heating pad because I don't want to take any chances (and it works so well for me).
You can add instant dry milk to your regular milk to help thicken the yogurt. I haven't tried that yet, but I recently bought some instant milk when I saw a good sale to try it in my next batch.
If you use instant milk, you do not have to heat the milk to 190 first, you can just heat it to the 110 degrees and go from there. I may try that too, but I'm guessing that the flavor is better when using fresh milk or mostly fresh milk anyway.