In coffee roasting, how does prolonged exposure to heat affect flavor?

• A. It intensifies sweetness
• B. It diminishes flavor complexity
• C. It enhances the acidity
• D. It adds floral notes

Answer: (B)

Prolonged exposure to heat during the coffee roasting process generally results in diminished flavor complexity. As coffee beans are roasted, various chemical reactions occur, developing the flavors that coffee drinkers enjoy. However, when beans are subjected to excessive heat over an extended period, the more delicate flavor notes and nuances can break down or be overshadowed by the more dominant, roasted flavors.

This leads to a more homogenized flavor profile, where the intricate layers of acidity, sweetness, and other specific tasting notes may become muted. Instead of the vibrant and complex flavors often sought after in high-quality coffee, prolonged roasting can produce a flatter, less interesting cup. This characteristic is crucial for roasters to consider, as maintaining balance and complexity in the roast can significantly enhance the final product's quality.