OK...so I was having this thought, and I realized I don't know the answer:
If you distill a hypothetical 60-40 corn/rye mash and age it in new oak, you have bourbon. Check.
If you take a very low-rye (no-rye?) bourbon, and blend it with a 100% rye whiskey in, say a 60-40 ratio, what you have, legally, is a "blend of straight whiskies". Check.
But if you take a corn mash off the still @ say, 125pf, and then take a 100% rye mash off the still at the same proof, and blend them in a 60-40 ratio, and then put them in new oak and age them, what do you have? Is it bourbon?
This comes from the discussion of the new Abraham Bowman high-rye release. Some discussions revolve around whether this was a custom mashbill, but I was wondering if they could have just blended BT#1 white dog and Taylor Rye white dog in an appropriate ratio and aged it? Does that make it bourbon?
Thanks in advance for the replies...