Home roasted coffee beans are fresher and have flavor complexities not found in store bought coffee. Scroll down to Step to learn how you can roast your own beans and taste the difference for yourself. Once finished, you can proceed to make coffee..Introduction. We can all agree that buying already roasted coffee is risky because you have no idea what is inside. Therefore, we can conclude that it is always better to learn how to roast coffee beans at your home..Coffee beans which have been roasted weigh lesser since the moisture has been roasted out. On biting, they are crunchy and can be grounded or brewed. Roasting of the coffee beans is an art and also a science. For one to become an expert in coffee beans roasting, he she needs to undergo a training to be able to read the coffee beans and making decisions with timing in split second..Nowadays, a lot of people have started roasting on small scale commercial level. There are many coffee lover who still roast coffee at their homes, but small scale coffee shops have to do it commercially. Coffee Roasting Process. The main step of roasting the coffee beans is performed after coffee processing, and before coffee brewing process. When doing it on m.ive scale, the bags of green coffee beans can either be opened by hands or by the machines..