Originally Posted by Brickout
How about mahogany? It's actually cheaper than maple right now.
I know that in general, mahogany is more rich in oils than most woods - that's part of why it's so dense and heavy. It also creates a sawdust that is so fine (particularly with power sanders) that breathing protection is highly recommended - the particles can easily be inhaled and can be deposited in the lungs. It is usually used as a detailing trim material or for inlays due to its beautiful colour.
I've heard that the pore structure allows more of it to be extracted (if you look at the end grain of a diagonal cross-section of mahogany, you'll see tiny holes all through it) - although I think the oils take a fair amount of heat to liquify.
Personally, I'd do a little google-searching on industrial or culinary uses of mahogany before putting it to use in contact with my beer.....however, I have a e-Brew system in planning that will be sheathed in wood for aesthetics/insulation and I'm currently debating between African mahogany, teak, and kukui....