In wine making what do you call the juice that is in barrel?

However, there are some nuances depending on the stage of winemaking:

* Before fermentation: The juice is simply called must.

* During fermentation: It's still called must, but may be referred to as fermenting must.

* After fermentation: Once the fermentation is complete, it becomes wine.

It's important to note that the term "must" can also refer to the juice of other fruits used for making juices, ciders, or other alcoholic beverages.