10 differences Between Robusta & Arabica Coffee September 19, 2014. You may have noticed that some coffee bag labels brag about the fact that their coffee beans are 100% Arabica., 100% Arabica blend of instant coffee and roasted and ground coffee. Discover Lavazza Prontissimo! and get ready to live the real Italian taste experience in an instant! Much more than instant coffee, Prontissimo! is a 100% Arabica blend enriched with 10% finely ground coffee., Making Your Own Coffee Blend with Arabica and Robusta Beans. February 3, 2015 by Allen J Pais. Buying a cup of coffee at a well-known branded outlet is no longer an affordable purchase. A 16 ounce coffee can cost between $2-$5 USD/AUD. It is sometimes alarming that the person who purchases the coffee is unaware what goes into making that coffee. I understand that not everyone is aware of the , Re: Arabica vs. Robusta Espresso Blends Sweet Marias has a little disertation on this. They suggest that if you are paying for a quality high end bean, you want the nuances of that bean., , .