Tim Horton's Dark Roast Premium Blend Coffee RealCups. Nicely balanced, all-around great cup of 100% Arabica coffee. Compatible with all Keurig(R) K-Cup(R) brewers. There's a new way to enjoy the great taste of Canada's favorite coffee anytime with Tim Horton's single serve coffee cups. Tim Horton's and this product have no affiliation with Keurig or K-Cup.