Several years ago I froze some yeast using a glycerin solution. I used recommended procedures and dilutions I read in a number of places. I think my method of freezing was OK.
Yesterday was the first time I have tried to re-activate some of the frozen yeast. I used two vials (to double the chance of it working), the vials were dated 2011. I placed the vials in warm (not hot) water to thaw quickly. Poured off the glycerin solution and added to about 6 ozs of 1.020 wort.
It is now 24 hours on, and it looks like there is a reasonable amount of yeast at the bottom of the container, and fermentation may be complete. Is it possible the yeast could have worked that quickly? I was expecting it to take a few days.
Yeast has been in an insulated bag with some some cold packs in a chest freezer the whole time.
There was a fair amount of yeast in each vial, so I could just be seeing the original yeast, but it does look like there is more than I started with.
Yesterday was the first time I have tried to re-activate some of the frozen yeast. I used two vials (to double the chance of it working), the vials were dated 2011. I placed the vials in warm (not hot) water to thaw quickly. Poured off the glycerin solution and added to about 6 ozs of 1.020 wort.
It is now 24 hours on, and it looks like there is a reasonable amount of yeast at the bottom of the container, and fermentation may be complete. Is it possible the yeast could have worked that quickly? I was expecting it to take a few days.
Yeast has been in an insulated bag with some some cold packs in a chest freezer the whole time.
There was a fair amount of yeast in each vial, so I could just be seeing the original yeast, but it does look like there is more than I started with.