Whiskey Proof Index - Comprehensive Bourbon & Whiskey Batch Index

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Searchable index of whiskey batch proofs, release years, and age statements. Find specific bourbon batches, compare proof variations, and track limited releases from Buffalo Trace, Heaven Hill, and more.

Frequently Asked Questions

Common Questions About Whiskey Proof Index

What is whiskey proof and how is it measured?

Whiskey proof is a measure of alcohol content. In the United States, proof is exactly twice the alcohol by volume (ABV) percentage. For example:

Barrel proof or cask strength whiskeys are bottled at their natural proof without dilution, typically ranging from 100 to 140+ proof.

How do I find the proof of a specific bourbon batch?

  1. Go to the main index page
  2. Use the search box to filter by:
    • Bourbon name (e.g., “George T Stagg”)
    • Batch number (e.g., “Fall 2023”)
    • Proof value
    • Release year
    • Distillery name
  3. Click column headers to sort results
  4. Results update instantly as you type

What does the 🏷️ label emoji mean?

The 🏷️ emoji indicates that a TTB (Alcohol and Tobacco Tax and Trade Bureau) label approval is available for that batch. The TTB is the federal agency that approves all alcohol labels in the United States.

Clicking the emoji opens the official government label registration, which provides:

How accurate is the data in the index?

We maintain high accuracy by:

Note: Some TTB IDs may be unverified. If you spot an error, please submit feedback.

How often is the index updated with new releases?

The index is updated regularly:

Can I download or export the whiskey data?

Yes! The data is open and accessible:

You can use the data for:

How can I contribute or suggest additions?

We welcome contributions! Several ways to help:

  1. Submit Feedback: Open a GitHub issue
  2. Suggest Additions: Include whiskey name, batch, proof, and release year
  3. Report Errors: Let us know about incorrect data
  4. Submit Pull Requests: Directly update the CSV file if you’re familiar with GitHub

What’s the difference between barrel proof and cask strength?

They’re the same thing! Both terms mean whiskey bottled at the proof it comes out of the barrel without added water.

Why do proof values vary between batches of the same whiskey?

Natural variation occurs due to:

  1. Barrel Location: Position in warehouse affects evaporation
  2. Aging Time: Longer aging can increase or decrease proof
  3. Climate: Temperature and humidity variations
  4. Evaporation: Different rates of water vs. alcohol loss
  5. Barrel Char: Level of barrel char affects interaction

This is why releases like George T Stagg, Booker’s, or Elijah Craig Barrel Proof show different proofs each batch - it’s a natural part of the aging process.

What distilleries and brands are covered?

The index includes major American whiskey producers:

Buffalo Trace Distillery:

Heaven Hill:

Old Forester:

Wild Turkey:

Others:

Are non-bourbon whiskeys included?

Yes! While we focus primarily on bourbon, the index also includes:

How do I use the search function effectively?

Tips for better searches:

  1. Name searches: Type part of the name (“Stagg”, “Craig”)
  2. Batch searches: Enter batch numbers (“Fall 2023”, “C923”)
  3. Proof searches: Type exact proof or range
  4. Year searches: Filter by release year
  5. Multiple terms: Search works across all fields simultaneously

Examples:

Is there a mobile app?

Currently, no dedicated mobile app exists. However, the website is fully responsive and works great on mobile browsers. You can:

Still have questions?

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