Bourbon & Whiskey FAQ

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Explorer Tier — $149.99

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✓ Hand-selected craft bourbon bottles ✓ Single-barrel picks and small-batch releases ✓ 94% of bottles evaluated are rejected ✓ Ships in 5–7 business days via FedEx ✓ Full credit if a bottle misses your palate

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Connoisseur Tier — $279.99

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✓ Everything in Explorer, plus allocated bottles ✓ Rare and limited-edition single barrels ✓ Priority access to new barrel picks ✓ Ships in 5–7 business days via FedEx ✓ Full credit if a bottle misses your palate

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About the Bourbon Mystery Box

What is a bourbon mystery box?

A bourbon mystery box is a curated selection of premium bourbon bottles hand-picked by experts and shipped directly to your door. At The Whiskey Library, every Bourbon Mystery Box features bottles sourced directly from distilleries — not from a catalog.

With a 94% rejection rate on bottles we evaluate, only the top craft bourbons make the cut. Each box includes rare single-barrel picks, small-batch releases, and allocated bourbons you won't find on most retail shelves. Boxes ship in 5–7 business days with full credit offered for any bottle that doesn't hit your palate.

How does The Whiskey Library select its bourbon?

Our curation process starts at the source. The Whiskey Library team visits distilleries, tastes through barrels, and evaluates each bourbon on flavor profile, uniqueness, and quality. We reject 94% of the bottles we evaluate — only the most exceptional craft bourbons make it into our collection or our Bourbon Mystery Box.

We focus on single-barrel picks, small-batch releases, and allocated bottles from both established Kentucky producers and emerging craft distilleries across the United States. Every bottle is hand-selected, not pulled from a distributor catalog.

What is a good bourbon for beginners?

For beginners, look for bourbons that are smooth, approachable, and lower in proof (80–90 proof). Classic entry points include Buffalo Trace, Woodford Reserve, Maker's Mark, and Four Roses Small Batch — all offer a balanced profile of caramel, vanilla, and light spice without overwhelming heat.

If you're not sure where to start, The Whiskey Library's Bourbon Mystery Box is designed for discovery: every box is curated to include a range of styles and flavor profiles, so you can explore craft bourbon without the guesswork of picking bottles yourself.

Bourbon Fundamentals

What is bourbon whiskey?

Bourbon whiskey is a type of American whiskey distilled from a grain mixture that is at least 51% corn. By law, bourbon must be produced in the United States, aged in new charred oak barrels, distilled to no more than 160 proof, entered into the barrel at no more than 125 proof, and bottled at a minimum of 80 proof.

There is no minimum aging requirement for bourbon, but "straight bourbon" must be aged at least two years. Most quality bourbons are aged four to eight years or longer, developing complex notes of caramel, vanilla, oak, and spice from the charred barrel.

What is the difference between bourbon and whiskey?

All bourbon is whiskey, but not all whiskey is bourbon. Whiskey is a broad category of distilled spirits made from fermented grain mash, encompassing Scotch, Irish whiskey, rye, and Japanese whisky.

Bourbon is specifically an American whiskey that must meet strict legal requirements: at least 51% corn mash bill, aged in new charred oak barrels, produced in the United States, and bottled at a minimum of 80 proof. These requirements give bourbon its distinctive sweetness, caramel depth, and vanilla character compared to other whiskey styles.

How is bourbon made?

Bourbon is made through a multi-step process. First, a grain mixture (mash bill) of at least 51% corn, along with malted barley and either rye or wheat, is ground and mixed with water and yeast. The mash ferments for several days, converting sugars to alcohol.

The fermented liquid (distiller's beer) is then distilled, typically in a column still followed by a doubler or thumper, to no more than 160 proof. The clear distillate (white dog) enters new charred American oak barrels at no more than 125 proof, where it ages — gaining its color, flavor, and complexity from the wood. After aging, it is bottled at a minimum of 80 proof.

What is the mash bill of bourbon?

A mash bill is the recipe of grains used to make bourbon. By law, bourbon must contain at least 51% corn, which gives it its characteristic sweetness. The remaining grains are typically malted barley (for enzyme activity during fermentation) and either rye or wheat as the flavoring grain.

A high-rye mash bill (like Bulleit or Four Roses) produces a spicier, bolder bourbon. A wheated mash bill (like Maker's Mark or Weller) produces a softer, smoother spirit. Understanding mash bills helps you predict which bourbons you'll enjoy — and it's one of the factors our curation team weighs when selecting bottles for The Whiskey Library.

What is straight bourbon whiskey?

Straight bourbon whiskey is bourbon that has been aged for a minimum of two years in new charred oak barrels, with no added coloring, flavoring, or other spirits — only water may be added to adjust proof.

If the bourbon is aged less than four years, the age must be stated on the label. Straight bourbon represents a higher quality designation because it guarantees both maturity and purity. Most premium bourbons, including many of the bottles featured in The Whiskey Library's curated selections, meet or exceed straight bourbon standards.

What does proof mean on a bourbon bottle?

Proof is a measure of alcohol content. In the United States, proof is exactly double the alcohol by volume (ABV) percentage. So a bourbon labeled 100 proof is 50% ABV, and an 80 proof bourbon is 40% ABV.

Higher-proof bourbons (100+ proof, sometimes called barrel proof or cask strength) tend to deliver more intense, concentrated flavors. Lower-proof bourbons are typically smoother and more approachable. Bottled-in-bond bourbon is always exactly 100 proof by law.

Bourbon Types & Terminology

What does bottled in bond mean?

Bottled in bond (BIB) is a legal designation under the Bottled-in-Bond Act of 1897 that guarantees a whiskey meets strict quality standards. A bottled-in-bond bourbon must be the product of one distillation season, made by one distiller at one distillery, aged in a federally bonded warehouse for at least four years, and bottled at exactly 100 proof (50% ABV).

The label must identify the distillery where it was produced. Bottled in bond is widely considered a mark of quality and transparency — it tells you exactly who made it, when, and where. Many bourbon collectors seek out BIB releases for their consistency and proof.

What is a single barrel bourbon?

Single barrel bourbon comes from one individual barrel rather than being blended from multiple barrels. Each barrel imparts unique characteristics — subtle differences in flavor, proof, and color — making every single barrel release one of a kind.

The Whiskey Library specializes in hand-selected single-barrel picks sourced directly at the distillery. Our team tastes through dozens of barrels to choose the ones with the most exceptional flavor profiles, which is why single barrel picks are the cornerstone of our Bourbon Mystery Box.

What is a barrel pick or store pick bourbon?

A barrel pick (also called a store pick or private selection) is a single barrel of bourbon selected by a specific retailer, bar, or group directly at the distillery. The buyer tastes samples from multiple barrels and chooses the one that best fits their desired flavor profile.

Barrel picks are highly sought after because they offer a unique expression of a bourbon you can't get anywhere else. At The Whiskey Library, our barrel picks are hand-selected at the source by our team, not ordered from a distributor catalog. This direct-from-distillery approach is a key part of what makes our curation different.

What is allocated bourbon?

Allocated bourbon refers to bottles that distilleries produce in limited quantities and distribute on an allocation basis to select retailers. Examples include Pappy Van Winkle, Buffalo Trace Antique Collection, George T. Stagg, and Weller Full Proof.

Because demand far exceeds supply, these bottles are difficult to find at retail and often sell out immediately. The Whiskey Library maintains direct relationships with distilleries and distributors to source allocated bottles for our customers — many of which appear in our Bourbon Mystery Box or Barrel Pick collections.

What is craft bourbon?

Craft bourbon is produced by small, independent distilleries that typically manage every step of production — from grain sourcing to mashing, distilling, aging, and bottling. Craft distillers often experiment with unique mash bills, heirloom grain varieties, non-traditional barrel finishes, and innovative aging techniques.

The Whiskey Library specializes in sourcing craft bourbon from these smaller producers across the United States, giving our customers access to bottles they won't find at big-box retailers. Many of our most popular Bourbon Mystery Box inclusions come from craft distilleries doing exceptional work.

Bourbon Care & Enjoyment

How should I store bourbon at home?

Store bourbon upright in a cool, dark place away from direct sunlight and temperature fluctuations. Unlike wine, bourbon should never be stored on its side — the high alcohol content can degrade the cork over time, leading to leaks or off flavors.

A sealed bottle of bourbon will keep indefinitely. Once opened, bourbon remains excellent for one to two years, though flavor may slowly evolve as oxygen interacts with the spirit. Keep the cap or cork sealed tightly after each pour to slow oxidation.

Is bourbon gluten free?

Yes, bourbon is generally considered gluten free. Although bourbon is distilled from grains that contain gluten — primarily corn, along with barley and rye or wheat — the distillation process removes gluten proteins. The Alcohol and Tobacco Tax and Trade Bureau (TTB) allows distilled spirits to be labeled gluten free.

However, individuals with severe celiac disease or gluten sensitivity should consult their physician, as trace amounts may vary by product.

Ordering & Shipping

What states can you ship bourbon to?

The Whiskey Library ships spirits to most states where direct-to-consumer alcohol shipping is permitted under state law. Shipping availability can change as state regulations evolve. All orders require an adult signature (21+) at delivery.

We ship via FedEx with standard delivery in 5–7 business days. If you're unsure whether we can ship to your state, reach out to our team at support@whiskeylibrary.com or call us at +1 (929) 499-2496 and we'll confirm availability for your address.

What is the return policy for The Whiskey Library?

Due to state alcohol regulations, The Whiskey Library cannot accept returns on spirits purchases. However, we do offer refunds for items that arrive defective or spoiled — just contact us at support@whiskeylibrary.com within 30 days of delivery with a photo of the item and your order number.

For our Bourbon Mystery Box, we go further: if a bottle doesn't hit your palate, we offer full credit toward your next purchase. Orders can be canceled within 2 hours of placing them. If you need to cancel, call or text us at +1 (929) 499-2496.

Still have questions? Email support@whiskeylibrary.com or call +1 (929) 499-2496