Sometimes yogurt just doesn't work out. I had a stretch of quite a long time (months, I seem to remember) when I could not get my yogurt to work. I changed milk brands, I changed yogurt brands (that I was using for starter), I think I was using a yogurt maker then, so did not change that (because I didn't know any other method). I finally gave up, started buying yogurt again. And when I finally went back to making it it worked just fine. I have no idea what the problem was, and have never had it again - well, occasionally, as a single event, not for months.
One thing I have found, and I have absolutely no idea why this should be the case, if I take the milk temp. up to 190* or 195*, instead of the routinely recommended 185*, I seem to have more consistent results. Why that extra 5 or 10 degrees should make a difference is beyond me, but it seems to.
One thing I have found, and I have absolutely no idea why this should be the case, if I take the milk temp. up to 190* or 195*, instead of the routinely recommended 185*, I seem to have more consistent results. Why that extra 5 or 10 degrees should make a difference is beyond me, but it seems to.