Wine glossary

sweetening
Definition:

In order to give wine its desired residual sugar content, the producer is allowed to add concentrated grape must (in the form of concentrate) or rectified concentrated grape must (RCGM) to the grape must. Austrian Landwein (land wine) and Qualitätswein (quality wine) may admittedly be sweetened by a maximum of 15 g/l, yet this is prohibited from the Kabinett quality category and above.