A folding spoon comprising: - a planar blank symmetrical along a longitudinal axis and having a handle portion with a front lateral edge and a bowl portion with a rear lateral edge and a plurality of folding lines disposed on said planar blank including - a longitudinal handle folding line extending from said front lateral edge along said longitudinal axis towards a rear lateral edge opposite said front lateral edge and terminating in the bowl portion , or - two longitudinal handle folding lines are provided on said planar blank symmetrically in relation to the longitudinal axis , - a first lateral folding line is arranged in said handle portion in a position closer to said rear lateral edge than to said front lateral edge and extending transversal to said longitudinal axis , - a second lateral folding line is arranged in said handle portion between said first lateral folding line and said front lateral edge in a distance from said first lateral folding line corresponding to the distance between said first lateral folding line and said rear lateral edge and extending transversal to said longitudinal axis , characterised in that - a cut out extends from said second lateral folding line toward said rear lateral edge and back to said second lateral folding line and thereby forms a retainer flap arranged to be placed behind an edge area at said rear lateral edge when the spoon is in folded condition, being folded along said first lateral folding line , said planar blank is made of paperboard sheet with a thickness greater than 300 μm. - a planar blank symmetrical along a longitudinal axis and having a handle portion with a front lateral edge and a bowl portion with a rear lateral edge and a plurality of folding lines disposed on said planar blank including - a longitudinal handle folding line extending from said front lateral edge along said longitudinal axis towards a rear lateral edge opposite said front lateral edge and terminating in the bowl portion , or - two longitudinal handle folding lines are provided on said planar blank symmetrically in relation to the longitudinal axis , - a longitudinal handle folding line extending from said front lateral edge along said longitudinal axis towards a rear lateral edge opposite said front lateral edge and terminating in the bowl portion , or - two longitudinal handle folding lines are provided on said planar blank symmetrically in relation to the longitudinal axis , - a first lateral folding line is arranged in said handle portion in a position closer to said rear lateral edge than to said front lateral edge and extending transversal to said longitudinal axis , - a second lateral folding line is arranged in said handle portion between said first lateral folding line and said front lateral edge in a distance from said first lateral folding line corresponding to the distance between said first lateral folding line and said rear lateral edge and extending transversal to said longitudinal axis , - a cut out extends from said second lateral folding line toward said rear lateral edge and back to said second lateral folding line and thereby forms a retainer flap arranged to be placed behind an edge area at said rear lateral edge when the spoon is in folded condition, being folded along said first lateral folding line , said planar blank is made of paperboard sheet with a thickness greater than 300 μm. <EOS>