A tool for preparing and treating food, such as knife, large fork, ladle, chopping board, etc., personalizable depending on the expected specific use, comprises a portion intended to come into contact with the food and a handle portion intended to allow the gripping of the tool by a user. The handle portion comprises at least one housing intended to house a distinguishing insert. The tool of the invention can thus be personalized by the user depending on the type of foodstuff for which it must be used.