Crema — the reddish-brown foam on top of a shot — comes from CO₂ trapped in freshly roasted coffee being forced out under pressure. When it's thin, pale, or missing entirely, it's almost always one of four things. Test them in this order.
01Stale beans
This is the most common cause by far. Coffee loses the CO₂ responsible for crema within a few weeks of roasting, faster once ground. If your bag doesn't have a roast date printed on it (only a "best by" date), that's already a warning sign.
02Grind size too coarse
A grind that's too coarse lets water pass through too quickly, under-extracting the shot and producing thin, fast-disappearing crema. Espresso grind should feel like fine table salt — noticeably finer than drip coffee grind.
If your shot pulls in under 20 seconds, that's a strong signal your grind is too coarse for your setup.
03Incorrect dose
Too little coffee in the basket means less resistance, which means water moves through too fast — same symptom as a coarse grind. Weigh your dose rather than eyeballing it; most single baskets want roughly 7–10g, doubles 14–20g, but always check your basket's rated range.
04Insufficient brew pressure
If beans are fresh, grind is fine, and dose is correct, the machine itself may not be reaching proper brew pressure — commonly caused by a worn pump, scale buildup restricting flow, or a leak elsewhere in the system.
| Symptom | Most likely cause |
|---|---|
| Crema present but disappears within seconds | Stale beans |
| Shot pulls very fast, watery crema | Grind too coarse or dose too low |
| Shot pulls slowly, crema still thin | Machine pressure or scale buildup |
Work through beans, then grind, then dose, before suspecting the machine itself — in that order, you'll solve most crema issues without a single tool.