Yeast Harvest

[Asalpaws]

As above, the rubber bungs just kept popping out of the tubes, loose screw tops while the yeast is liquid. Then close em up once frozen. T

 

[Smiddylad]

It was my understanding that you buy screw tops ones and you leave it loose whilst the yeast culture is incubating. Once complete and ready for storage you tighten and even use parafilm (or other such tape) to seal the lids even further. However I have never used glycerine so I don’t know what the process is for that. I’m assuming these need to be tightly sealed once they go into cold storage too.