Kylene

Kylene is a level 60 drink vendor located in the World's End Tavern in the neutral Shattrath City.

After Patch 2.3.0, she was also a special cooking trainer, the only one who offered the recipes below. Since Patch 4.0.1 they are taught from all regular cooking trainers.
 * Stewed Trout
 * Fisherman's Feast
 * Hot Buttered Trout

She also responds to certain emotes:
 * /applaud or /bow (She will respond with the /curtsey emote.)
 * /dance (She will respond with the /dance emote.)
 * /flex (She will respond with the /laugh emote.)
 * /kiss (She will respond with the /shy emote.)
 * /rude (She will respond with the /rude emote, and a chat message saying "Kylene returns the rude gesture to .")
 * /shy (She will respond with the /kiss emote.)
 * /wave (She will respond with either "What's your poison, ?" or "What can I get you today, ?")

See List of Shattrath City NPCs.