I'm about to oak my first beer. An Imperial stout that's evolved into a Double Chocolate Imperial Stout. I was at the Festival for Barrel Aged Beers a few weeks ago and got a sample of this guys honeycomb barrel alternative.
Black Swan Cooperage
My goal is coconut flavors so I'm using white oak but here is the list of flavors he says wood will impart depending on species which he has or can do:
Cherry - Butter brickle,ripe cherry,fresh grass,meringue,light fried bread/Belgian waffle.
Hard Maple - Maple candy,light spice-nutmeg,cinnamon,syrup,bread/bakery,cream,hint of cocoa
Hickory - Honey,BBQ,hickory smoked bacon,apple sauce,cocoa,coconut
Red Oak - Red berries,toasted marshmallow,light grass,baking bread,butterscotch
Soft Maple - Yellow cake,light smoke,banana,nut,toasted bread,hint of orange spice
White Ash - Campfire,marshmallow,light grass,rising bread dough,light sweetness(adds different mouthful dimension)
White Oak - Vanilla,toasted coconut,cinnamon,pepper,sweetbaked bread,caramel
Yellow Birch - Toffee,butterscotch,honey,croissant,light lemon,and tropical fruit
These tasting notes may vary,dependent on the type of beer being aged.