Made a starter with one cup of pale DME, 1.5 qts of water, boiled for 10 minutes, cooled to 75 degrees. Pitched one package of Wyeast 2206 - Bavarian Lager at 7pm last night. Do lager yeasts take longer to grow than ale yeasts? Was planning on trying to decant/step this up tonight for a brew on saturday.
If one pound of DME = 40 gravity points, and a pound is about 2 cups. Wouldn’t one cup in 1.5 quarts give me a gravity of (something really high)? After some evap, there is only about 200ml of starter wort in my flask. No white stuff on the bottom, stir plate has been stirring for ~18 hours…
I thought that you would at least see a white line of yeast on the bottom…though I guess I can’t make that assumption if the stir plate is still on…is a gravity reading the only way, or will the yeast throw that measurement off?
You should have seem some Kraeusen development. But that may have happened while you are asleep. A pack of yeast contains a lot of cells for just 1.5 qt of wort.
How does the yeasy look when it is stirred. Does lit look like small flocks of egg drop soup swirling around or do you simply have very hazy looking wort.
If it is the former, the yeast is done. It ate the sugars it was able to eat and flocculated. Most German lager yeasts tend to be strong flocculators. In the latter case the wort still has fermentable sugars that inhibit flocculation.
If the Kraeusen happened overnight, you may also see a think Kraeusen ring on the flask.
I just went through this with a pack of Wyeast 2124 ( see “What are you paying for your yeast post?”). Mine went on a stir plate at room temp for 36 hours and nothing. The yeast was older ( March 6th ) but I expect to see something.
I did smell the starter and it smelled like wort…no yeast or sulfur compounds. I didn’t take a gravity reading because I was a little frustrated with the yeast ( and the shop that charged me $11.75 for the smack pack ), so I dumped it.
How old was the yeast and how was it handled before getting to you ( i.e. shipped from online store in 95 degree heat) ?
I know, I know. It was one of those situations where I have to step it up a couple times and if I didn’t get it that day, my schedule would be pushed back. Trust me, it’s not something I do on a regular basis.
Local shop and I kept it in a cooler until I got home. I’m guessing it was dead before I got my hands on it.
I got another pack from a different shop, not as old and less money. Started my first step on Saturday and by Monday night it had fermented out. I put it in the fridge on Monday night and made my second step last night. After decanting and adding new wort, I put it on the stirplate and sat down to watch “Beerfest”. By the time the movie was over, it was chugging along with visible CO2 rising up and a small krausen ring on the top. Less than 2 hours lag time!!! Awesome!
One more step to do before brewing early next week!
There should still be a higher partial pressure of CO2 in the solution than in the atmosphere. If you shake the starter, does it release bubbles (like bubbles rising in your pint glass)? Do you see foaming? If not, then the yeast did not take off.
I just went through this same thing with two vials of WLP830 from two different sources in two separate starters. Ordered a smack pack of the Bavarian lager yeast from wyeast and got no activity in the smack pack. Finally got two packets of dry yeast going. This will be the ultimate test of how long you can go between brewing and fermentation activity. I emailed white labs about it and they comped me for the two vials. I have been brewing lagers with this yeast for over 8 years and have never had more than one vial fail to take off. The only thing I can guess was that the heat during shipment was too much. But the second two shipments got here in one day. Both vials were well before their overdue date. Really strange. Doing a dunklen in a few weeks and hoping for better luck.
Amazing that so many have had problems with lager yeasts since I had the same thing happen about a month ago. Did a starter of Wyeast 2112 California Lager and after 3 days, nothing. Took the empty pack back to show the the pouch was broken and everything mixed. But even letting the pack set for 3 hrs prior to pitching into the starter, it hardly swelled at all. The shop credited it no problem. I planned on making a california common and a scottish ale and left the starter setting. Put the scottish ale to work with a liquid vial of yeast that a local brewery users and it was fine without making a starter. 5 days later, boom, the 2112 started churning and going like a starter should. I took my california common ingredients and made another beer. Now I probably need to tell the shop the yeast finally did its thing and pay them back.