Look for beef ribs with a clear red color. Beef is normally a purplish-red color, but when exposed to oxygen it takes on a cherry-red hue known as the “bloom.” While the exterior is bright red, the interior of the meat will retain the darker color. Vacuum-packed beef ribs also show this purplish color. Packaged beef ribs should be cold and the package should show no punctures or tears; vacuum-packed beef should have its seal intact. The beef should be firm to the touch. Check the “sell-by” date and buy on or before that date.