A laundry treating appliance having a tub having an open face and at least partially defining a treating chamber in which laundry may be received for treatment according to an automatic cycle of operation, a door for closing the open face of the tub, a perforated rotatable drum located within the tub and a method of operating such that the rotation of the drum is accelerated at a rate sufficient to cause an inrush of supplied liquid into the treating chamber from the tub via the perforations that locates a unit dose treating chemistry within the treating chamber.