The present invention provides a method of producing sclareol, said method comprising contacting a particular polypeptide having a sclareol synthase activity with labdenediol diphosphate (LPP). In particular, said method may be carried out in vitro or in vivo to produce sclareol, a very useful compound in the fields of perfumery and flavoring. The present invention also provides the amino acid sequence of the polypeptide used in the method. A nucleic acid derived from Salvia sclarea and encoding the polypeptide of the invention, an expression vector containing said nucleic acid, as well as a non-human host organism or a cell transformed to harbor the same nucleic acid, are also part of the present invention.