In 2 experiments, white (cv. Le Lion X13) and brown (cv. Le Lion C9) mushrooms were stored for 9 days in a 'dry' (85-90% RH) and a 'moist' (99.9% RH) cold store at 2-4 deg C. Measurements were taken every 24 h of weight loss, colour (measured spectrophotometrically) and organoleptic properties (cap colour, form and appearance on cutting, on a scale 9 (best) - 1 (worst)). Brown mushrooms showed greater weight loss than white mushrooms. The moist air cooling gave marginally better storage.