Lager yeasts take some time to get going when compared to ales. If you pitched enough yeast and if you made a starter and pitched at 70F to 80F then it does not take very long to start (a few hours). If pitched cold it should be going in less than 24 hours. Note that lager yeasts sometimes do not show a krausen like ale yeasts do in the first few hours as their action is going on in the bottom of the fermenter. If using a carboy you can see the action of small bits of yeast moving up and down inside. Relax, it will start soon.
Fermentor 1: Bill's House Ale II, Fermentor 2: German Helles, Fermentor 3: Bill's Schworzbier (Black Bier)
Tap 1: Bill's House Ale II, Tap 2: German Hefewizen, Tap 3: Nut Brown Ale
Future Brews: Stone IPA Clone, Blonde Ale, Budvar Clone, Newcastle Clone
New toy: Blichmann 27 gallon fermentor
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