Long, sinewy, consistent. It is the only tomato that does not crush during processing, it remains entire and unaltered  in the tin.
Only with this fruit it is possible to obtain a high quality peeled tomato of supreme flavour. the protected Designation of Origin  designates  exclusively the “peeled” product  and the “sliced peeled” type coming from the processing of  fruits that belong to the San Marzano ecotype or enhanced lines of the same.
The product presented for consumption has to have precise technological characteristics : an even red colour with colorimetric  ratio  a/b, elongated and parallelepiped shape, no foreign tastes or odours, weight of drained product not less than  65% of the net weight, refractometry residue  not less than  4%. It is permitted to add at most 3%  of salt , basil leaves, semi-concentrated tomato juice , but only that of  S. Marzano.