Substance mixtures are proposed, comprising(a) terpenes,(b) propane-1,3-diol, and optionally(c) active substances selected from the group consisting of (c1) rebaudiosides or plant extracts comprising them,(c2) steviosides or plant extracts comprising them,(c3) monatin,(c4) naringin,(c5) chalcones and hydrochalcones,(c6) mogrosides or plant extracts comprising them,(c7) rubusosides or plant extracts comprising them, and(c8) glycyrrhizic acid or plant extracts comprising it.
