Torrefacto - Wikipedia, the free encyclopedia
"Torrefacto refers to a particular process of roasting coffee beans, common in Spain, France, Portugal, Costa Rica and Argentina. The process involves adding a certain amount of sugar during roasting in order to glaze the beans. The glazed beans are then mixed with normal roasted beans. Whilst originally a cheap way of adding weight to the beans, a suggested reason for continued use the technique has been maintenance of the aroma and taste of the coffee. In fact the opposite is probably true and the process sharply increases the acidity and bitter taste of the coffee. The process is not followed in the rest of the coffee world."
I would be less than enthusiastic about grinding sugar coated beans in my Mazzer Mini, I can imagine the clean up process after the event.