The effect of freeze-chilling on the quality of mashed potato from three potato cultivars (Rooster, Golden Wonder and Maris Piper) was examined as was the effect of long and short-term frozen storage prior to thawing on the quality of freeze-chilled mashed potato (Rooster only). Four process treatments were used; fresh, chilled, freeze-chilled and frozen and the mashed potato was tested for firmness, colour, centrifugal drip loss, vitamin C content, total viable count and taste panel acceptability. Rooster had a significantly higher vitamin C content than Golden Wonder or Maris Piper. A significant difference (P