In both cases, when the espresso comes out of the spout, the crema ​ — the golden froth on the surface of the fresh espresso — ​ will indicate how well the oils have been extracted. ”
اما اذا كانت انعم مما ينبغي ،‏ فيكون مذاقها مرًّا لاذعا وفيه اثر من احتراق .‏