A composition for masking the bitter taste of potassium chloride or other potassium salt used in a consumable product as a substitute, in whole or in part, for common table salt, said composition comprising a sugar alcohol and a compound of formula (I) CH2OH-(CHOH)4-CO-NH-CH2-CH2-X; a compound of the formula (II): R1-CR2 (OR3)-CO-Y; a flavour modulating substance of the formula (III): R1-CR2(OR3)-CO-NR4-Y'-X'; or mixtures thereof.