The most popular ground coffee in our break room* is the Merus European Dark Roast. We usually make two airpots of coffee a day here in the office and time after time the European Dark is the most popular with the staff. CSN is the online sister company of Merus Coffee Express - A local office coffee service. I often have customers call who have been to local restaurants that serve our Merus brand coffee and want to buy it because it taste so good.