Choosing Coffee Beans For Your Coffee Machine The type of beans you use in your machine will determine the quality of your coffee. Select beans that have been freshly roasted and have an even flavor profile. The size of the grind is also important; smaller grounds take longer to extract. https://telegra.ph/5-Reasons-To-Be-An-Online-Coffee-Bean-Machine-Buyer-And-5-Reasons-To-Not-08-27