Honeycrisp is an apple cultivar developed at the Minnesota Agricultural Experiment Station's Horticultural Research Center at the University of Minnesota, Twin Cities. Designated in 1974 with the MN 1711 test designation, patented in 1988, and released in 1991, the Honeycrisp, once slated to be discarded, has rapidly become a prized commercial commodity, as its sweetness, firmness, and tartness make it an ideal apple for eating raw. "...The apple wasn't bred to grow, store or ship well. It was bred for taste: crisp, with balanced sweetness and acidity." It has larger cells than most apple cultivars, a trait which is correlated with juiciness, as larger cells are more prone to rupturing instead of cleaving along the cell walls; this rupturing effect is likely what makes the apple taste juicier. The Honeycrisp also retains its pigment well and has a relatively long shelf life when stored in cool, dry conditions. Pepin Heights Orchards delivered the first Honeycrisp apples to grocery stores in 1997. The name Honeycrisp was trademarked by the University of Minnesota, but university officials were unsure of its protection status in 2007. It is now the official state fruit of Minnesota. A large-sized honeycrisp will contain about 113 calories.