
kellern
to cellar
To bring something, especially wine, into a cellar for storage and aging.
Der Winzer kellert den neuen Jahrgang erst nach einigen Monaten ein.
The winemaker cellars the new vintage only after a few months.
to cellar / go to the cellar
Loading your saved state.

to cellar
To bring something, especially wine, into a cellar for storage and aging.
Der Winzer kellert den neuen Jahrgang erst nach einigen Monaten ein.
The winemaker cellars the new vintage only after a few months.

to go to the cellar
Colloquial for going down to the cellar, usually to get something from there.
Ich muss noch schnell kellern, um eine Flasche Wasser zu holen.
I still need to quickly go down to the cellar to get a bottle of water.
The verb 'kellern' (to cellar / go to the cellar) is derived directly from the noun 'der Keller' (the cellar). It describes an activity that takes place in the cellar or has to do with the cellar.
Wir müssen die Äpfel bald kellern, damit sie den Winter über halten.
We need to cellar the apples soon so they last through the winter.
In the meaning 'etwas zur Lagerung in den Keller bringen' (to bring something into the cellar for storage), the separable verb 'einkellern' (to cellar / store in a cellar) is used very often. It emphasizes the process of bringing something into the cellar.
Jeden Herbst kellern wir Kartoffeln und Wein für den Winter ein.
Every autumn we cellar potatoes and wine for the winter.
The meaning 'in den Keller gehen' (to go to the cellar) is colloquial. It is used in informal conversations as a shortened way of saying that someone is going to the cellar.
Kannst du kurz kellern und eine neue Flasche Saft holen?
Can you quickly go down to the cellar and get a new bottle of juice?
to store / camp
Both words can refer to wine that is kept for a longer period of time. Kellern emphasizes bringing the wine into a cellar for storage and aging. Lagern describes more generally that the wine is kept there. Use “kellern” for bringing it in and “lagern” for the resulting state.

Wir kellerten den neuen Rotwein für mehrere Jahre ein.
We put the new red wine in the cellar for several years.
Der Rotwein lagert seit drei Jahren im kühlen Keller.
The red wine has been aging in the cool cellar for three years.