Reasons why espresso flows over the edge of the portafilter
- Portafilter is not inserted in the group head properly. Make sure the portafilter is completely inserted and rotated until the handle is aligned to the lock icon.
- There are coffee grounds around the rim of the filter basket. Swipe any excess coffee to ensure a proper seal in the group head.
- Too much coffee in the filter basket. Use a lower dose of coffee.
Here's our handy guide for how much ground coffee you need to put in your espresso machine's filter basket:
| Basket type | Shot | Dose (grams) | Use for |
|---|---|---|---|
| Single wall | 1 shot | 10-12 | Freshly ground whole bean coffee |
| Single wall | 2 shot | 18-20 | Freshly ground whole bean coffee |
| Double wall | 1 shot | 10-12 | Pre-ground coffee |
| Double wall | 2 shot | 18-20 | Pre-ground coffee |