Choosing Coffee Beans For Your Coffee Machine The beans you choose to use in your machine will determine the quality of your beverage. Choose freshly roasted beans that have a balanced flavor profile. Grind size is important as well; smaller grounds are more efficient at extracting. Try different grind sizes https://telegra.ph/Automatic-Bean-To-Cup-Coffee-Machines-History-History-Of-Automatic-Bean-To-Cup-Coffee-Machine-08-27