You are reading a single comment by @mmccarthy and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
mmccarthy
Probably not the clumping causing it. Make sure the coffee is fairly evenly distributed before tamping, ie no big peaks or troughs, so it tamps evenly. Tap the sides of the portafilter against your hand or level the coffee with your finger if you need to. If the flow acts like it’s a bit choked at the start of the shot and then starts running fast, grind a bit coarser and up the dose.