A long time ago, I began to notice that when I brewed beers over 9-10% alcohol by volume (ABV) that they tended not to carbonate in the bottle. It became a rule of thumb for me to always include bottle conditioning yeast (either CBC-1 or champagne yeast ) any time I brewed a beer over 9%. I forgot to do that with a beer that came out at 10.9%, and it failed to carbonate. I learned with that beer that by inverting the bottles daily for a week to rouse the yeast inside, I could achieve carbonation. When I brewed a batch of beer intended to replicate Dogfish Head's Palo Santo Marron , I decided to take a chance and not dose it with bottle conditioning yeast either. After weeks in a warm location, there was virtually no carbonation, even using the bottle-inversion trick. For another two weeks, I increased the temp to 80F and did a daily inversion of the bottles, while also rotating them around the space inside the cooler to ensure that eve...