QFI was a San Franciscosupermarket chain founded in the late 1940s by John Musso. Originally, some QFI locations were leased, resulting in some stores being co-named with others (such as Lick Super Market). By the 1970s, when Musso's son Leo took over, all QFI stores were wholly owned and operated. QFI peaked as the number three grocery chain in the region, behind Safeway and Lucky, and had about 14 locations ranging from San Francisco south to Redwood City.
In 1973, QFI was acquired by Cala Foods, which itself was acquired by Ralphs (a subsidiary of Kroger) in the 1990s; Ralphs sold Cala back to its original operator in 2006.