I recently tried the closed-system pressurized fermentation technique outlined in this thread
. I didn't have a Sanke keg big enough to ferment my 5.5gal batch, so I instead split the batch between two cornies and tee'd the spunding valve to both.
My problem comes in that there is a yeast cake on the bottom of one of the corny fermenters that is plugging my dip tube and/or poppet valve. I had intended to counter-pressure transfer the beer through a filter to the serving keg, but with the dip tube clogged, there's no way to empty that fermenter under pressure.
So... I've decided that I need to rack the beer to the serving keg. The problem is that the beer is carbonated with ~2vol of CO2. Attempts at using my autosiphon fail because the beer offgasses enough to break the siphon during transfer.
Any tips/tricks to making this work? Would using larger tubing and no autosiphon be less likely to break siphon? How can I keep the CO2 from coming out of solution, or do I have to decarb completely?