Several reasons, and most of them are fixable.
You are putting it in milk
The most common answer. Milk mutes acidity and buries delicate florals — precisely the qualities you paid for. A 30-euro Geisha in a flat white tastes like a nice flat white.
Expensive light-roast coffee is for drinking black.
It is under-extracted
Light roasts are dense and hard to extract. Brewed at the settings that suit a medium roast, they under-extract and taste sour and thin — which reads as “nothing special”.
Grind finer, brew hotter, and give it more contact time.
The roast is hiding it
If a roaster took an expensive lot dark, the origin character is gone. That is a roasting choice and no brewing fixes it.
Your palate is still building
Genuinely. Distinguishing a washed Ethiopian from a washed Colombian is a learned skill, built by comparison rather than by concentration.
Brew two coffees side by side and the differences become obvious in a way they never are alone.
Your water
Very soft or very hard water flattens everything. This is the variable nobody suspects.
Or the coffee is overpriced
It happens. Name inflation is real, particularly with Geisha and celebrated washing stations.
Last reviewed 8 August 2026