Hi.
I'm looking for manga where the main character is a bartender or waitress or the main character's love interest is a bartender or waiter or they are both in either profession. I'd prefer bartender though.
Focus on career, romance or everyday life. No gag or focus on comedy please.

I'd like the protagonist to be female.
I'd like to avoid high school setting if possible because the only one I read (Kaichou wa maid-sama) has a horrible female lead so I'm prejudiced. But of course even then I am open to recommendations.

I'm aware of the categories..didn't help.
Thanks in advance.

...Bartender lol
edit - oops didn't notice the "female" part. It's a nice manga though you should give it a try.

Seconding Sommeliere and (Bartender too, if you're fine with a male lead; there are reoccurring female bartenders too!)

Kami no Shizuku has the female friend (love interest?) as a sommelier.