Use of diacetyl dimer as an aromatic and/or flavouring substance

Process (i) for imparting, intensifying and/or modifying a creamy and/or fatty sensation in the mouth, and/or (ii) for imparting, intensifying and/or modifying a sweet, buttery, cream-like and/or creamy flavour, with the steps:

• a) provision of 5-acetyl-2,5-dimethyl-2-hydroxy-tetrahydrofuran-3-one (diacetyl dimer of formula (I)) or a mixture comprising 5-acetyl-2,5-dimethyl-2-hydroxy-tetrahydrofuran-3-one, wherein the 5-acetyl-2,5-dimethyl-2-hydroxy-tetrahydrofuran-3-one is in the form of one of its stereoisomers or in the form of a mixture consisting of two, three or four of its stereoisomers;
• and
• b) bringing into contact or mixing of
• 5-acetyl-2,5-dimethyl-2-hydroxy-tetrahydrofuran-3-one or the mixture thereof provided in step a), wherein 5-acetyl-2,5-dimethyl-2-hydroxy-tetrahydrofuran-3-one is respectively present in a sensorially active amount, with
• a substance optionally comprising one, two, three, four, five, six, seven, eight, nine, ten or more aromatic and/or flavouring substances different from 5-acetyl-2,5-dimethyl-2-hydroxy-tetrahydrofuran-3-one.

Aromatic and/or flavouring composition, comprising as components:

• (a) a sensorially active amount of 5-acetyl-2,5-dimethyl-2-hydroxy-tetrahydrofuran-3-one (diacetyl dimer of formula (I)) in the form of one of its stereoisomers or in the form of a mixture consisting of or containing two, three or four of its stereoisomers, and
• (b) one, two, three, four, five, six, seven, eight, nine, ten or more aromatic and/or flavouring substances different from 5-acetyl-2,5-dimethyl-2-hydroxy-tetrahydrofuran-3-one (diacetyl dimer of formula (I)),
• with the proviso that the aromatic and/or flavouring is not a composition comprising:
• 5-acetyl-2,5-dimethyl-2-hydroxy-tetrahydrofuran-3-one (diacetyl dimer of formula (I)) and one (i) or more hydroxides of an alkaline metal selected from NaOH and KOH, and/or (ii) sulfuric acid but no further aromatic and/or flavouring substances, or
• 5-acetyl-2,5-dimethyl-2-hydroxy-tetrahydrofuran-3-one (diacetyl dimer of formula (I)), and (i) diacetyl or (ii) 2,5-dimethyl-3-(2H)-furanone but no further aromatic and/ flavouring substance.