It is during the roasting process that the sugars and other carbohydrates within the bean become caramelized, creating a substance which is known as the coffee oil.

• 这样才能保证在烘焙过程中咖啡中所含的糖和其他碳水化合物碳化，从而产生出众所周知的咖啡油脂，产生出高质量、风格一致的好咖啡。