It's a new month and the new brew is here! May's Brew of the Month is a very simple Springtime Stout with a familiar side effect. When you drink one of your drinks, you have a chance to proc the buff called 'Flower Child.' The buff only lasts ten seconds or so, and as you run around with the buff, flowers pop up underfoot. Herbalists, you've seen something like this before.
I try to give little factoids on the real life brews some of these are named after (such as the fact that Pilsners shouldn't exist in Azeroth), but stouts aren't very exotic, overall! A stout is a very dark, very strong sort of ale, and seems just like the sort of thing Dwarves would be mailing out regularly. I don't know about that whole 'flower child' thing, though. Seems more like something Night Elves would do to their ale.