I’ve had approx 1.5L (in 3 jars) of slurry in the fridge for the past 4 months (harvested 7.29). I was planning to brew another mex lager this week. Monday night I began the process of waking it up. I added each jar of slurry (0.5L) to approximately 0.67L of starter wort but have had almost no activity. I give each bottle a gentle stir to keep the yeasties in suspension and they’re on the shelf at approx 70F and I added yeast nutrient to the wort before mixing the slurry with the starter wort. One of the three foams with the stir, so I’m sure those guys are alive. One not so much. One about half as much as the active one.
So, any idea as to how much I actually have that are viable? Should I step each up to a larger volume of starter wort…say maybe 1.5L?
any insight or recommendations would be greatly appreciated.