Abstract: A method for extracting and concentrating the flavours of one of more foodstuffs, including the steps of (a) cooking the foodstuff or foodstuffs under vacuum for a duration of 1 to 15 hours, preferably between 1.5 and 13 hours, at a temperature of between 50 and 90° C., preferably between 70 and 88° C., more preferably between 80 and 86° C., in order to obtain an exudate of the foodstuff or foodstuffs, (b) collecting the exudate, (c) crystallising the water contained in the exudate in the form of ice by freezing the exudate, and (d) obtaining a concentrated extract of flavours from the exudate by separating the ice crystals from the remainder of the exudate, where step (a) of under vacuum cooking is carried out in bags of the vacuum bag type.