Apparatus for portioning rice, particularly for sushi, comprises a mould (14) horizontally shiftable between a charging position, in which a row of mould cavities (15) are filled with compressed rice, and a discharge position in which the mould cavities (15) are positioned over a tray (32) to receive the rice portions (11). When the mould (14) is in the discharge position, ejector members (26) move downwardly towards the mould, the ejector members (26) and the mould (14) then moving downwardly together until an over-centre mechanism is released to move the mould (14) upwardly with a snap action which causes the rice portions (11) to be released from the mould cavities (15) and placed in the receiving tray (32).