Light roasts will often have more acidity , with much of the bean’s inherent sensory characters retained.
Medium roasts will often exhibit more body than light roasts, and have a good balance of acidity and sweetness, whilst maintaining some of their aromatic integrity.
Medium-dark roasts have a richer, darker color with a muted acidity and a slightly bittersweet taste. These are roasts which are bridges from the world of commercial coffee into specialty, exhibiting the low acidity sought after in darker commercial roasts without the intense bitterness.
Dark roasts are dark brown with a pronounced bold and bitter taste.