Contents

What Is Bourbon?

Bourbon is a legally defined American whiskey with a unique set of production requirements that make it distinct:

  • Made in the United States
  • At least 51% corn in the mash bill
  • Aged in new, charred oak barrels
  • Distilled to no more than 160 proof
  • Entered into the barrel at 125 proof or less
  • Bottled at a minimum of 80 proof
  • No added flavoring or coloring

These legal standards ensure consistency, quality, and protect the integrity of the term “bourbon.”

A Brief History of Bourbon

Bourbon’s roots date back to the late 1700s when settlers in Kentucky distilled surplus corn into whiskey. Over time, bourbon became known for its bold character and rich oak flavor. Prohibition nearly ended the industry, but thanks to distillers and connoisseurs, bourbon has re-emerged as one of the most respected spirits globally.

Read: The Future of Craft Distilleries in Bourbon

How Bourbon Is Made

Bourbon making process flowchart showing mash, fermentation, distillation, aging, and bottling

The 6-Step Bourbon Production Process:

  1. Mash Bill – Primarily corn, combined with rye or wheat and malted barley.
  2. Fermentation – Yeast converts sugars to alcohol in open or closed tanks.
  3. Distillation – Usually in a column still, to a max of 160 proof.
  4. Barreling – Into new, charred oak barrels at no more than 125 proof.
  5. Aging – Stored in rickhouses, typically 4–8 years.
  6. Bottling – Proofed down with water unless labeled “cask strength.”

Types of Bourbon

TypeDescription
Straight BourbonAged at least two years, no additives.
Bottled in BondAged 4+ years, 100 proof, single distillery, one season.
Small BatchCurated from a limited number of barrels (no legal definition).
Single BarrelEach bottle comes from an individual barrel, often hand-selected.
Cask StrengthUncut and unfiltered, bottled at barrel proof for maximum intensity.

Explore: 2025 SFWSC Double Gold Bourbon Winners

Bourbon vs. Whiskey: Key Differences

Whiskey TypeRegionUnique Characteristics
BourbonU.S.≥51% corn, new charred oak barrels
Tennessee WhiskeyTennesseeBourbon rules + charcoal filtering (Lincoln Process)
ScotchScotlandOften peated, aged in used barrels
Irish WhiskeyIrelandTriple distilled, smoother texture

How to Taste Bourbon

Illustrated guide showing bourbon tasting steps with visual cues

Step-by-Step Bourbon Tasting Guide:

  1. Look – Observe color, legs, clarity. Darker often means older or deeper char.
  2. Nose – Gently swirl and take short sniffs. Look for vanilla, caramel, spice, fruit.
  3. Sip – Roll across your tongue. Focus on sweetness, spice, richness, and texture.
  4. Finish – Linger and evaluate: is it long, dry, warm, or balanced?

Related: Sip Score Bourbon Ratings

How to Read a Bourbon Label

Understanding label terms helps you identify quality, origin, and flavor potential:

  • Mash Bill – Corn, Rye, Wheat, Barley percentages. Usually something like 86/10/0/4
  • Age Statement – Indicates youngest barrel in the batch.
  • Designation – “Straight,” “Bottled in Bond,” “Cask Strength”
  • Distillery – Look for “distilled by” to identify if it’s sourced or house-made. If it doesn’t say distilled by, it is sourced.
  • Proof – Tells you the alcohol content; higher proof = bolder flavor. Proof is double the ABV. Or ABV is half of the proof.

Deep Dive: Sourced Bourbon Controversy: Not a Dirty Word

How to Build a Bourbon Collection

To develop your palate, start with variety:

ProfileExample
Classic StraightElijah Craig Small Batch
WheatedWeller Special Reserve
High-RyeFour Roses Single Barrel
Cask StrengthStagg Jr.

Storage Tip: Keep upright, away from heat, light, and humidity.

Common Bourbon Myths Debunked

MythReality
Bourbon must be from KentuckyIt can legally be made anywhere in the U.S.
Older bourbon is always betterMany peak in the 6–8 year range
Clear whiskey is illegal“White dog” is unaged bourbon, perfectly legal
Mash bill matters mostIt all matters. Mash, fermentation, aging, aging location

Related Reading: 3-Tier System in Bourbon Distribution Needs Reform

Frequently Asked Questions

Q: What qualifies as bourbon?
A: Bourbon must be made in the U.S., with at least 51% corn, aged in new charred oak barrels, and meet strict proof guidelines with no flavor additives.

Q: Is all bourbon from Kentucky?
A: No. While most comes from Kentucky, bourbon can be legally produced in any U.S. state.

Q: What’s the best way to taste bourbon?
A: Use a Glencairn glass, sniff gently, sip slowly, and pay attention to how the flavor evolves from nose to finish.

Q: What is the difference between bourbon and Tennessee whiskey?
A: Tennessee whiskey follows the same rules but includes charcoal filtering via the Lincoln County Process.

Final Thoughts

There’s no right or wrong way to enjoy bourbon—just better ways to understand what’s in your glass. Whether you’re a beginner or building a serious collection, this guide is your compass for navigating the ever-expanding world of America’s native spirit.