Abstract: A food storage container system is provided having a plurality of tightly sealable containers, removably seated in shallow sockets in a tray base or rotatable tray of circular or semi-circular configuration. Each container is a sector-shaped hollow body formed by three upstanding side walls which are terminated at the lower end by a bottom wall. Two of the upstanding side walls are substantially planar, being oriented at an angle of 60.degree. one with respect to the other. These two planar side walls merge to form a rounded vertex opposite the third side wall, with the third side wall following an arc of a circle which merges in rounded corners with the two planar side walls. The arc defining the third side wall is concentric about the point at which the two planar side walls would meet at a 60.degree. angle if they were extended to a sharp vertex instead of merging in a rounded vertex. This rounded vertex between the two 60.degree.