The appliance settings need reviewing.
|PERFECT ESPRESSO||UNDER-EXTRACTED COFFEE||OVER-EXTRACTED COFFEE|
|Froth||Nut-brown coloured with dark lights and light-coloured streaks, 3-4mm thick.||Clear and thin with large bubbles.||Dark and thin, only at the edges.|
|Body||Dense, full-flavoured and smooth.||Thin and watery.||Excessive.|
|Taste||Well-balanced and lingering.||Weak and short-lived.||Strong, astringent, lingering and bitter on the palate.|
|Aroma||Intense.||Not pronunced.||Weak, with a hint of burnt coffee.|
|Grinding level||Correct.||Too coarse. Adjust the mill to a lower position.||Too fine. Adjust the mill to a higher position.|
|Coffee quantity||Correct.||Not enough. Increase the quantity.||Too much. Reduce the quantity.|