So first time using the stir plate, and not a great outcome.
Pretty sure i know what i did wrong, but surprised it was this bad!
I use a 3litre Erlenmeyer, makes 1.5 litre starter coming close to boiling over. Process:
Weigh 150g of DME into flask
Reset scale to zero and weight in 1.5kg hot water
This measures way over 1.5litres on the flask scale, but i presume weighing is more accurate than flask marks.
Put in stir bar.
boil 10 minutes with foil over lid.
cool in sink with cold water
Pitched about 50mls of yeast slurry from previous*
Onto stir plate for 48 hours.
Think this is where i went wrong. I planned to use it after 3 days, but change in plans, did brew day a day earlier.
The starter smelt great, bready, little bit citrusy which apparently 1272 can, but clean.
Took it off plate and let yeast settle for few hours. It settled into what i thought looked like a good slurry of yeast, 100+ mls?
The 'beer' tasted ok, but FG = 1020, not fully fermented
Pitched the starter into 23 litres of SG1035 wort.
3 days later no activity, SG not moved. Gave up and threw in 2 packs of S04.
Fail. I'd have thought 48 hrs would be time for some good activity / growth / multiplication / yeast party whatever they do?
*previous: I opened a pack1272, used 3/4 of it in a brew (which went great), and grew a starter from the rest. Didn't have the stir plate then, but let it grow for 3 or 4 days shaking whenever i walked past it. Let it settle out, poured off the beer, and kept the slurry in the fridge for 2 weeks. Think i used about1/4 of the slurry from this starter in the next one.
Pretty sure i know what i did wrong, but surprised it was this bad!
I use a 3litre Erlenmeyer, makes 1.5 litre starter coming close to boiling over. Process:
Weigh 150g of DME into flask
Reset scale to zero and weight in 1.5kg hot water
This measures way over 1.5litres on the flask scale, but i presume weighing is more accurate than flask marks.
Put in stir bar.
boil 10 minutes with foil over lid.
cool in sink with cold water
Pitched about 50mls of yeast slurry from previous*
Onto stir plate for 48 hours.
Think this is where i went wrong. I planned to use it after 3 days, but change in plans, did brew day a day earlier.
The starter smelt great, bready, little bit citrusy which apparently 1272 can, but clean.
Took it off plate and let yeast settle for few hours. It settled into what i thought looked like a good slurry of yeast, 100+ mls?
The 'beer' tasted ok, but FG = 1020, not fully fermented
Pitched the starter into 23 litres of SG1035 wort.
3 days later no activity, SG not moved. Gave up and threw in 2 packs of S04.
Fail. I'd have thought 48 hrs would be time for some good activity / growth / multiplication / yeast party whatever they do?
*previous: I opened a pack1272, used 3/4 of it in a brew (which went great), and grew a starter from the rest. Didn't have the stir plate then, but let it grow for 3 or 4 days shaking whenever i walked past it. Let it settle out, poured off the beer, and kept the slurry in the fridge for 2 weeks. Think i used about1/4 of the slurry from this starter in the next one.