What can cause uneven roasting of coffee beans?

• A. Too small batch sizes
• B. Inconsistent heat application
• C. Using only one type of bean
• D. Cooling the beans too quickly

Answer: (B)

Inconsistent heat application is a significant factor that can lead to uneven roasting of coffee beans. When heat is not evenly distributed during the roasting process, some beans may experience high temperatures while others may not receive adequate heat. This disparity can result in a batch where some beans are over-roasted and others are under-roasted. Achieving a uniform roast requires careful management of heat throughout the roasting cycle, ensuring that all beans are subjected to consistent temperature levels.

Other factors, while they can influence roasting, do not directly cause unevenness in the same way. For example, batch sizes that are too small may not distribute heat effectively due to the limited volume, and using only one type of bean should not inherently cause uneven roasting if all beans are roasted under the same conditions. Rapid cooling of beans, although it may affect the final flavor or aroma, does not typically result in uneven roasting either. Therefore, it is the inconsistency in heat application that primarily leads to uneven roasting outcomes.