Light roasts are dense, and their cell structure is less broken down, so water meets more resistance. Everything must push harder.
Grind finer
Noticeably finer than your normal setting — several steps, not one. This is the largest lever.
Water hotter
94 to 96 °C, and boiling water is not a mistake with very light Nordic roasts.
If your kettle has no temperature control, use it straight off the boil rather than waiting.
Longer contact
Extend the brew. A V60 that runs 2:45 with a medium roast might want 3:30 with a light one.
For espresso, go longer on the ratio — 1:2.5 or 1:3 rather than 1:2.
More agitation
Stir during the bloom, and consider pulse pouring rather than one continuous stream. Both raise extraction.
Get the water right
Light roasts are the least forgiving of poor water. Mineral-deficient water gives sour, empty cups from exactly the coffees that should taste of jasmine and citrus.
Around 70 to 100 ppm hardness, low alkalinity.
Let it rest longer
Very light roasts often need two to three weeks from roast, not one. They degas more slowly and taste closed before then.
The grinder problem
Light roasts expose grind unevenness ruthlessly — fines burn while boulders sour, in the same cup. If a light roast tastes harsh and sour at once, it is the grinder, not the recipe.
The reward
When it works, this is where coffee tastes least like coffee and most like fruit.
Last reviewed 8 August 2026