Timing the liquid fall and camera move so that the impact into the glass was the focus of the shot.
Using an arc track we poured the beer from a vessel into the glass and filmed the beer and bubble swirl.
We also used a turntable to spin the glass so we could see a shift in the frame without moving the camera, so whilst the glass was spinning the pour remained in the same position. A neat trick and a good visual element.
NORM times the pour and spin simultaneously.