The dish itself is made out of weathering steel, which is a special type of weather resistant steel that has virtually the same characteristics as regular steel. Weathering steel however, reacts to being put outside by gradually covering itself with a protective layer of rust or 'oxyden' also called 'platinum layer'. As a result, further erosion due to rain or fire is prevented and the Qrater can be left outside without a problem.
With the optional skewer and grill you can roast a small snack for yourself. Remember that you always need the standard if you wish to use the grill.