New to brewing and harvesting yeast. Stupid question: I've heard certain commercial beers that are bottle conditioned can be harvested for yeast. I'm wondering if Great Lakes Commodore Perry IPA (which I understand uses a WL London Ale 013 Yeast) is bottle conditioned? and if yeast from the bottle could be harvested for starter kit? I've seen information on internet doing this with Sierra Nevada but not sure about Great Lakes Beer. Have also seen that some breweries use different strains of yeast for bottling than making the beer. I know it would be easier to just purchased a vial of WL 013 but the scientist in me is interested in trying this. I'm growing something in the starter, just not sure it's the yeast I'm looking to put into my Commodore Perry clone. Any help/input appreciated, thanks, Moose