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Understanding Blended Bourbon Whiskey
At least 51% straight bourbon whiskey on a proof-gallon basis. The remainder can be whiskey, neutral spirits, or both, with neutral spirits limited to 49%. This differs from a blend of straight bourbon whiskeys.
Source: 27 CFR § 5.143(c), Table 1, row 11
Permitted additions and limits: 27 CFR § 5.155
Bottling must be at least 80 proof / 40% ABV. Shared whiskey requirement: § 5.143(a)
The whiskies
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