Abstract: A food container system can include a tray with a bottom and a side wall, which together define a recess. The tray can have an array of ribs on the bottom panel that can extend to the side wall. The side wall can have female ribs that extend from the bottom panel to the top edge of the side wall. An inverted corner creating a concave shape on the exterior edge of the tray can be disposed at the intersection of the bottom wall and the side wall. The tray can include a rim that extends around the perimeter of the tray, which can accept a complimentary surface of a lid.