Coffee roasting process. I will here discuss the principals of roasting and commercial roasting. Vietnamese Coffee Roasting. During the roasting process, some natural sugars are transformed into carbon dioxide gas, whereas the others are converted into some flavors that formulate complex characters in coffee. Vietnamese Coffee Culture. From green beans to roast or ground coffee in small-, medium- or large-scale operations – our customized solutions are designed around your needs. Vietnamese coffee is distinctively strong because of two reasons: 1) A different type of coffee bean Vietnamese coffee is almost always Robusta. Read about the different ways to roast coffee at home from Tomi’s blog. There are different ways to make it, and that affects the flavour. Traditionally, Vietnamese coffee is known for having a dark roast. Coffee is a huge part of daily life in Vietnam, which is the second-largest coffee producer in the world.The French brought coffee to Vietnam in the 19th century, and after the Vietnam War, the government instituted a massive coffee production program. Coffee Roast Guide. The roasting process often includes added flavors such as mocha, chicory, vanilla, butter or even whiskey. By the 1990s coffee production started to take off and today Vietnam produces over 1.73 million tons of coffee a year. Copper Cow Coffee opts for an all-natural European-style roast, that lets the natural flavors of our specialty bean brew through. Once this process is complete, the green bean will form into a brown bean, and this brown bean is 18% lighter in weight and 50 to 100% larger in size. Beans are stored green, a state in which they can be kept without loss of quality or taste. Roasting brings out the aroma and flavor that is locked inside the green coffee beans. We have been building coffee processing equipment and complete process solutions for over 50 years. Roasting means transforming coffee beans from green to brown. Why roast? The roasting of the coffee beans is the process of forming the flavor and aroma of coffee beans . Roasting is a heat process that turns coffee into the fragrant, dark brown beans we know and love.