A speciality coffee flavour note across London.
Black walnut in the cup presents as a deep, slightly bitter nuttiness with an earthy, resinous quality that sits heavier on the palate than milder nut notes such as almond or hazelnut. There is often a faint astringency in the finish, along with a dry, woody undertone that lingers after the sip. This character typically emerges from longer fermentation times during processing, natural or semi-washed methods, and medium-to-dark roast profiles that draw out the more complex, tannic compounds in the bean.
Coffees from Central American origins, particularly those grown in Honduras and Guatemala, often display this note when processed using extended natural or honey methods. Certain Ethiopian naturals can also carry black walnut character, though it tends to appear alongside fruit and floral notes in those cases. Higher-altitude beans that have undergone some degree of slow drying typically develop the denser, more phenolic compounds associated with this flavour.
On a bag or menu, black walnut often appears alongside descriptors such as dark chocolate, tobacco, cedar, or molasses, which suggests a coffee with weight and earthy depth rather than brightness or acidity. It is worth looking for natural or extended-fermentation process notes on the label, as these methods are most commonly linked to this character. Brew methods that allow longer contact time, such as French press or a slow pour-over with a coarser grind, tend to bring this note forward more clearly than faster, pressurised methods.
Take our 60-second flavour quiz and discover roasts across London that are aligned with your palate — including ones carrying black walnut notes.