Sommelier's stock

WINES

Aged in barrels or bottles, these are what a wine expert carefully selects and serves.

A sommelier is a wine expert, often found in restaurants selecting and serving wines. The clue "Sommelier's stock" refers to the collection of wines they work with, making "WINES" the straightforward answer. The word "stock" here simply means their supply or inventory, not a financial term or pun—just a direct nod to what a sommelier handles daily.