I am thinking of buying a Jura C5. I have heard that you should avoid using an oily bean. Seems like a dumb question, but how will I know. We normally use Rio Grande Roasters whole beans in our current maker. I am not sure if this would be considered "oily". Any tips would be appreciated!
I am not familiar with those beans... However, if you can easily see oil on the beans, then they are not going to be good for your machine. If you look in a back of Starbucks Coffee, you will see what I mean about "clearly seeing oil".