Go with the flow-control
Flair | Flow-Control Portafilter
Flair's new Flow-Control Portafilter is easy to spot, being bright red. It's also easy to use, and is the key to the NEO's consistently good results.
Restricting the flow of water through the coffee grounds, it helps to regulate pressure and contact time and assists in producing more consistent extractions—regardless of your grind quality.
Comes standard with the NEO espresso maker, and is compatible with Classic & Signature models.