Use of - a single alkamide and/or - a mixture comprising or consisting of two or more different alkamides, wherein the single alkamide or one, several or all of the alkamide(s) in the mixture are selected from the group consisting of 2E,4E-decadienic acid-N-isobutylamide (trans-pellitorin), 2E,4Z-decadienic acid-N-isobutylamide (cis-pellitorin); 2Z,4Z-decadienic acid-N-isobutylamide; 2Z,4E-decadienic acid-N-isobutylamide; 2E,4E-decadienic acid-N-( -2-methylbutyl)amide; 2E,4E-decadienic acid-N-( -2-methylbutyl)amide; 2E,4E-decadienic acid-N-( -2-methylbutylamide); 2E,4Z-decadienic acid-N-(2-methylbutyl)amide; 2E,4E-decadienic acid-N-piperide (achilleamid); 2E,4E-decadienic acid-N-piperide (sarmentin); 2E-decadienic acid-N-isobutylamide; 3E-decadienic acid-N-isobutylamide; 3E-nonenic acid-N-isobutylamide; 2E,6Z,8E-decatrienic acid-N-isobutylamide (spilanthol); 2E,6Z,8E-decatrienic acid-N-( -2-methylbutyl)amide (homospilanthol); 2E,6Z,8E-decatrienic acid-N-( -2-methylbutyl)amide; 2E-decen-4-inic acid-N-isobutylamide; 2Z-decen-4-inic acid-N-isobutylamide; 2E,6Z,8E,10E-dodecatetraenic acid-N-(2-methylpropyl)amide (α-sanshool); 2E,6Z,8E,10E-dodecatetraenic acid-N-(2-hydroxy-2-methylpropyl)amide (α-hydroxysanshool); 2E,6E,8E,10E-dodecatetraenic acid-N-(2-hydroxy-2-methylpropyl)amide (γ-hydroxysanshool); 2E,4E,8Z,10E, 12E-tetradecapentaenic acid-N-(2-hydroxy-2-methylpropyl)amide (γ-hydroxysanshool); 2E,4E,8E,10E,12E-tetradecapentaenic acid-N-(2-hydroxy-2-methylpropyl)amide (γ-hydroxyisosanshool); 2E,4E,8Z, 10E, 12E-tetradecapentaenic acid-N-(2-methyl-2-propenyl)amide (γ-dehydrosanshool); 2E,4E,8Z,10E,12E-tetradecapentaenic acid-N-(2-methylpropyl)amide (γ-sanshool); 2E,4E,8Z,11Z-tetradecatetraenic acid-N-(2-hydroxy-2-methylpropyl)amide (bungeanool); 2E,4E,8Z,11E-tetradecatetraenic acid-N-(2-hydroxy-2-methylpropyl)amide (isobungeanool); 2E,4E,8Z-tetradecatrienic aicd-N-(2-hydroxy-2-methylpropyl)amide (dihydrobungeanool) and 2E,4E-tetradecadienic acid-N-(2-hydroxy-2-methylpropyl)amide (tetrahydrobungeanool), for masking or reducing an unpleasant taste impression of an unpleasant tasting substance or substance mixture. - a single alkamide and/or - a mixture comprising or consisting of two or more different alkamides, wherein the single alkamide or one, several or all of the alkamide(s) in the mixture are selected from the group consisting of 2E,4E-decadienic acid-N-isobutylamide (trans-pellitorin), 2E,4Z-decadienic acid-N-isobutylamide (cis-pellitorin); 2Z,4Z-decadienic acid-N-isobutylamide; 2Z,4E-decadienic acid-N-isobutylamide; 2E,4E-decadienic acid-N-( -2-methylbutyl)amide; 2E,4E-decadienic acid-N-( -2-methylbutyl)amide; 2E,4E-decadienic acid-N-( -2-methylbutylamide); 2E,4Z-decadienic acid-N-(2-methylbutyl)amide; 2E,4E-decadienic acid-N-piperide (achilleamid); 2E,4E-decadienic acid-N-piperide (sarmentin); 2E-decadienic acid-N-isobutylamide; 3E-decadienic acid-N-isobutylamide; 3E-nonenic acid-N-isobutylamide; 2E,6Z,8E-decatrienic acid-N-isobutylamide (spilanthol); 2E,6Z,8E-decatrienic acid-N-( -2-methylbutyl)amide (homospilanthol); 2E,6Z,8E-decatrienic acid-N-( -2-methylbutyl)amide; 2E-decen-4-inic acid-N-isobutylamide; 2Z-decen-4-inic acid-N-isobutylamide; 2E,6Z,8E,10E-dodecatetraenic acid-N-(2-methylpropyl)amide (α-sanshool); 2E,6Z,8E,10E-dodecatetraenic acid-N-(2-hydroxy-2-methylpropyl)amide (α-hydroxysanshool); 2E,6E,8E,10E-dodecatetraenic acid-N-(2-hydroxy-2-methylpropyl)amide (γ-hydroxysanshool); 2E,4E,8Z,10E, 12E-tetradecapentaenic acid-N-(2-hydroxy-2-methylpropyl)amide (γ-hydroxysanshool); 2E,4E,8E,10E,12E-tetradecapentaenic acid-N-(2-hydroxy-2-methylpropyl)amide (γ-hydroxyisosanshool); 2E,4E,8Z, 10E, 12E-tetradecapentaenic acid-N-(2-methyl-2-propenyl)amide (γ-dehydrosanshool); 2E,4E,8Z,10E,12E-tetradecapentaenic acid-N-(2-methylpropyl)amide (γ-sanshool); 2E,4E,8Z,11Z-tetradecatetraenic acid-N-(2-hydroxy-2-methylpropyl)amide (bungeanool); 2E,4E,8Z,11E-tetradecatetraenic acid-N-(2-hydroxy-2-methylpropyl)amide (isobungeanool); 2E,4E,8Z-tetradecatrienic aicd-N-(2-hydroxy-2-methylpropyl)amide (dihydrobungeanool) and 2E,4E-tetradecadienic acid-N-(2-hydroxy-2-methylpropyl)amide (tetrahydrobungeanool), for masking or reducing an unpleasant taste impression of an unpleasant tasting substance or substance mixture.