Illy Espresso Roasting S (black) 18 Servings (pods) The perfect dosage of finely ground coffee is pressed between two layers of filter paper to make an illy Serving (also known as a cialde or pod). In order to retain their excellent reputation, illy only use the finest Arabica beans which must first undergo a rigorous selection process before being gently roasted. The result is an espresso blend celebrated by connoisseurs across the world for its consistent high quality. The caffeine concentration of illy Espresso Roast N is less than 1.5 %!