Carbohydrate, noun: An ingredient in coffee. Together with fat and protein, they are an essential component of our diet. They are a product of photosynthesis in plants. They constitute 30-40% of coffee beans. Over the course of the roasting, carbohydrates undergo significant changes. The sugars almost completely disappear. The insoluble polysaccharides from the cellular walls of the coffee bean then form the spent coffee grounds, which are left over.
