I suddenly realized that I was using plastic yogurt cups from the 1970s in my yogurt incubator. My next thought was substituting glass half-pint jars instead. It works! And it's so much more aesthetically pleasing: a reminder to myself to step back and look at my routines sometimes, to see what can be improved.
|I get the screw-top lids at an Amish store, but you could just use the canning lids and rings.|