The present invention relates to a method for extracting the components that impart the characteristic odour and flavour to the plant Trigonella foenum-graecum, using a solution of acetic acid, preferably ordinary vinegar, which makes it possible to use said legume not only in the agrifoodstuff industry but also in the cosmetic industry and in traditional medicine. Furthermore, the present invention relates to a method for extracting Trigonella foenum-graecum mucilage, which has acknowledged curative properties and dermatological uses.