I like to use hickory, oak and mesquite to heat treat dead animal parts, that is briskets, hams, chickens, pork chops.
Sausage especially, but be careful, this stuff can get really brittle if you're increasing your aluminum can stock pile.
Burgers swell up an get really fat if not prepared correctly and really dry if H/T'd too long.
The longer you heat treat these items, the darker the color, you pick what you like best.
But for dimension lumber 2x's and what not, got to have them if for nothing else to make short pieces out of long pieces. I have a lot of practice and lots of short pieces stockpiled.
Enough of my rambling.
George