A bowl assembly 110 for a kitchen appliance 1 arranged to process ingredients contained within the bowl assembly 110, comprising: a bowl 112 having an aperture 115 in its base; a drivable tool mount 200 for a food processing tool arranged to fit within the aperture 115; and a blanking plug 300 arranged to fit within the aperture 115; wherein the drivable tool mount 200 and blanking plug 300 are interchangeable with one another.