A process for producing colourless vat milk is proposed, in which (a) vat milk is subjected to an ultrafiltration and in the course of this a first permeate P1 and a first retentate R1 are produced (b) the permeate P1 is subjected to a reverse osmosis and in the course of this a second permeate P2 and a second retentate R2 are produced, (c) the second retentate R2 is treated with an adsorbent and in the course of this a further retentate R2* is produced, (d) the resultant retentate R2* is combined with the retentate R1 and the permeate P2.
