The most common and most likely answer to this crossword clue is the 6 letter word BODEGA
I've seen this crossword clue in The Guardian
B
O
D
E
G
A
More clues leading to the result BODEGA
- Bloke given say before another’s opening wine store
- No spring chicken, alumnus about to show concern for alcohol
- Bloke keen, some say, to establish wine shop
- Chap has taken up period winestore
- Herald turnaround in silver market
- Wine specialist reviewing mature old barrel
- Wine cellar from which mature old Burgundy initially brought up
- Person, for example, visiting a shop selling wine
- Chap, say, associated with a wine shop
- Person, for example, associated with a wine shop
Buddy explains!

The straight part
We know that "Wine specialist" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case wine specialist = bodega.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BODEGA mean?
BODEGA noun- A storehouse for maturing wine, a winery.
- A store specializing in Hispanic groceries.
- Any convenience store.
- (Southwestern United States) Any small or medium sized shop with a unique facade in a shopping center plaza, usually located in the center or the sides of the plaza. Does not include the anchor tenant of the shopping center, as they are usually referred to as the anchor.
- A warehouse.