Roasting is the process of cooking, boiling, and grilling food to turn it into a roasted product and Roaster Machine is the unit used in this operation. Roasting is, undoubtedly, the most important phase in food production of products such as coffee beans. The roaster is a cylindrical broiler made up of blades that is used for roasting. The drum that covers the roaster is powered by electricity, wood, or gas and rotates continuously, similar to how a washing machine works. This operation allows for constant heat transfer without the food products coming into close contact with a hot surface for extended periods of time.