|Whiskey Product||% Corn||% Barley Malt||% Rye||% Wheat|
|Bourbon (45% Wheat)||51||4||0||45|
|Bourbon (49% Barley Malt)||51||49||0||0|
|Bourbon (21% Rye)||75||4||21||0|
|Bourbon (36% Rye)||60||4||36||0|
|Bourbon (99% Corn)||99||1||0||0|
|Corn Whiskey (15% Rye)||81||4||15||0|
|Light Whiskey (99% Corn)||99||1||0||0|
|Malt Whiskey (100% Barley Malt)||0||100||0||0|
|Rye Whiskey (49% Barley Malt)||0||49||51||0|
|51% Rye Whiskey||45||4||51||0|
|95% Rye Whiskey||0||5||95||0|
|95% Wheat Whiskey||0||5||0||95|
You can see how a blender who knew what they were doing might do some interesting things. Want a rye whiskey that's a blend of 70% rye, 20% corn, and 10% barley malt? Try 12.4% of the 49% barley malt rye whiskey, 44.4% of the 45% corn rye whiskey, and 43.2% of the 95% rye whiskey. If you weren't concerned about calling it a straight whiskey, you could probably bottle pretty close to any combination of the four grains listed.
Or you could set up like Whisky Blender, stock up on a few barrels of each, and let your customers design their own blends on a per-bottle basis. I expect most of the results would be uninspired, and I don't know what you'd do with all that light whiskey you bought just in case, but it might be fun.