The present invention in a first aspect relates to taste improvement of foodstjuffe, beverages, pharmaceutics, tobacco products and oral care products, using a sijbstjance according to formula (1) or formula (II), or edible salts thereof: R"-CR7(OR4)-CO-^R2-CR8R3-X-OR5 (I) R6-CR7(OR4)-CO-Az (II). It was found that substances represented by formula (I) and/or formula (II) are capable of modulating and complementing the sensory impact of taste imparting substances. Thus, the present taste improving substances are advantageously applied in flavour compositions, foodstuffs, beverages, pharmaceutics, tobacco products and oral care products. Typical examples of flavour improving substances according to the present invention include N-laptoyl emanolamine, N-lactoyl ethanolamine phosphate, N-&agr-hydroxy-but4noyl ethanolamine, N-lactoyl diethanolamine, N-lactoyl-2-amino-l,3-propanedjio, N-lactoyl-3-amino-l, 2-propanediol, N-lactoyl-3-amino-l-propanol, N-gluconyl-2-amino-1, 3-propanediol, N-gluconyl-3-amino-l, 2-propanediol, N-mannonyl ethanolajJiinp, N-glycolyl ethanolamine, 2-hydroxyethyl-N-tartaramide, 2-hydroxyethyl-N-malamj(jle, 2-hydroxyethyl-N-citramide and N-gluconyl-Az.
