How To: Dialing in a Pressurized Portafilter

So you've got an espresso machine with a pressurized portafilter -- like a Saeco Aroma, Via Venezia or Sirena -- and you're looking to improve your shots. Dialing it in doesn't require the same level of precision as when you're using a non-pressurized portafilter, and since the pressurization system impacts the pace of the shot, you can't dial it in by timing the shots. So, what's left? Tasting, of course! Watch as Gail tries different grind and prep techniques and how that impacts shot flavor on the Via Venezia.