Abstract: A control method and an associated apparatus for a winemaking process, wherein a must obtained from the pressing step is sent to one of a plurality of fermentation tanks or a must is taken from a maceration and fermentation tank. The method comprises the steps of: —preselecting at least one colorimetric value of the said must; —colorimetrically measuring the must; —comparing the colorimetric value measured with said preselected value and—in the case of a deviation by a predefined amount between said two values: —sending said must obtained from the pressing step to a second tank different from the one said must was directed to; —stopping the maceration and fermentation of said must taken from the maceration and fermentation tank and transferring it into an aging tank or barrel.

Abstract: A device (12) for treating must, comprising a duct (14) for the flow of said must, having an inlet end (16) and an outlet end (18), characterized in that it comprises inside the duct (14) cutting means (20) comprising at least one rotating cutting blade (22) interfering at least partially with the must flow.