A disposable food serving bowl formed of a mineral-filled polyolefin sheet which comprises a substantially planar central portion (340), a sidewall portion (342) and a flange portion (356) having a characteristic volume, V, measured in cubic centimeters; said sidewall portion (342) extending outwardly and upwardly from said central substantially planar portion (340); said flange portion (356) extending outwardly from said sidewall portion (342) and comprising an outer arcuate rim portion with a radius of curvature (R4) subtending an outermost arc (S5), said outermost arc (S5) defining the outer edge of said bowl and having a downwardly projecting terminus, wherein said radius of curvature (R4) of said outermost arc (S5) in centimeters is from 0.38 x (V/592) 1/3 to 0.89 x (V/592) 1/3 .