if you drink from the bottle, there will be sediment that gets shook up and into the beer, so I leave the bottom bit of beer in the bottle. but I've also found that if you open the bottle, and pour it into a glass in one smooth pour without "glugging" the bottle, you can pour the beer out and the little yeast cake stays behind in the bottom, because you didn't swirl the beer over it over and over or distrub it during the pour.