A system for generating for a client at least one indication of a food product to be purchased, the system comprising: data entry means for entering at least one product reference associated with a purchased product; first storage means for storing said at least one product reference in association with an identifier; second storage means for storing a plurality of product references in association with respective food values; third storage means for holding a recommended total food value; terminal means coupled to the first storage means for receiving the identifier; a recommendation unit for comparing the food value of the purchased product with said recommended total food value, said recommendation unit being arranged to select from said plurality of product references at least one product based on the result of said comparison, whereby said indication is generated for the client.