A method of modulating the flavour of an orally-receivable product, such as a foodstuff, beverage, dentifrice or medicine, comprising the addition thereto of a flavour-modulating proportion of at least one compound of the formula I
in which
X is selected from CHOH, C═O, CH
2
—CO and CH═C(OH),
Y is selected from C1-C7 linear and branched alkyl and CH
2
CH
2
OH,
Z is selected from CH
3
and a moiety of the formula II
in which the wavy bond represents bond linking Z to X and
R
1
and R
2
are selected from the possibilities
(i) both hydrogen;
(ii) independently OH and OCH
3
; and
(iii) R
1
and R
2
together with their bonds to the phenyl ring form a ring of the formula —O—CH
2
—O—;
such that, when Z is CH
3
, X is C═O and Y is CH
2
CH
2
OH.