A recall has been issued on over 600,000 Mr. Coffee single-cup coffee brewers in the United States and Canada due to a potential burn hazard. According to the U.S. Consumer Product Safety Commission, in the affected machines, a buildup of steam can force the brewing chamber to open and expel hot coffee grounds and water. So far, 164 incidents have been reported, 61 of which include consumers suffering burn injuries. To see which models have been recalled, check Mr. Coffee Direct.