Ok, the yogurt worked. Whew. No cussing. About that.
Remember when the container used to say on the label that they contained active cultures? Well, this store brand doesn't do that anymore. Since I still had the container from the last time I made yogurt (missed the recycle day), I looked and it is the same as the one I just used. I might spend some time reading the labels on various yogurt containers the next time I'm at the store.
Or maybe not. I just ordered some yogurt culture online, thanks to the info from
@ronott1, our fermentation guru. It should get here about the time I need to make more yogurt.