Whiskey Recipes - Grains, Proof, and Aging (2025)

This blog provides information for educational purposes only. Read our complete summary for more info.

February 27, 2014

Last updated

Emmet Leahy

Chief Operating Officer at Clawhammer

Whiskey Recipe Basics

Whiskey is made from a variety of different grains including barley, rye, wheat and corn. Different types of whiskies use different types of grains. For example, Bourbon must contain at least 51% corn. Single grain scotch is made with 100% malted barley. Read on for more information on whiskey styles and recipes.

Whiskey Recipes - Grains, Proof, and Aging (2)

Before we get started, a reminder: Distilling alcohol is illegal without a federal fuel alcohol or distilled spirit plant permit as well as relevant state permits. Our distillation equipment is designed for legal uses only and the information in this article is for educational purposes only. Please read our complete legal summary for more information on the legalities of distillation.

First Things First - Malted Grains

Malted grains are a critical part of every whiskey recipe. In fact, without malt enzymes, it would not be possible to make whiskey with ingredients like corn, barley, or rye. Malted grain is simply grain that has been sprouted. When grain sprouts, the seed creates enzymes capable of converting starch into sugar. Since yeast eat sugar to make alcohol, and grains such as corn and barley are mostly starch, these enzymes play a very important role. They convert grain starch into sugar during the mashing process, making fermentation possible.

Second Things Second - "Basic Whiskey"

Legally speaking (yes, certain legal requirements must be met for all of the spirits we'll list in this article),"whiskey" is defined as follows: Spirits distilled from a fermentedmash of grain at less than 95%alcohol by volume (190 proof) havingthe taste, aroma and characteristicsgenerally attributed to whiskey andbottled at not less than 40% alcoholby volume (80 proof).

The addition of food coloring IS allowed. These characteristics are what define whiskey in general, and the requirements must be met for any spirit to include the word "whiskey" on the label. However, as we'll discuss below, if certain additional requirements are met, other labels may be used.

Bourbon (Kentucky or Otherwise)

The first thing you need to know about Bourbon is that all Bourbon is whiskey but not all whiskey is Bourbon. If we just blew your mind, keep reading, we'll clarify. The second thing you need to know is that Bourbon can be produced anywhere in the U.S. More below.

For a whiskey to be labeled "Bourbon," it must be fermented from a mash of not less than 51 percent corn, distilled at no higher than 160 proof, stored in new charred American white oak barrels at no higher than 125 proof, and bottled at no less than 80 proof.

Bourbon has no minimum aging requirement. It can be aged as little as one day and labeled Bourbon, but food coloring may NOT be added. "Straight Bourbon" must be aged for at least 2 years in new charred American white oak barrels.

Bourbon must be distilled in the United states, but regular ol' bourbon does NOT need to be distilled in Kentucky (as many people believe). However, to label something "Kentucky Bourbon," all of the above mentioned requirements must be met and it must be distilled in Kentucky. Sooo, what then is the difference between Kentucky Bourbon and Generic Bourbon? Well, aside from the physical location, it'd be the water. Kentucky prides itself as a state with superior water for distilling, as the earth beneath it is rich in limestone.

For more information on Bourbon, check out this article we wrote on how to make Bourbon.

Tennessee Whiskey

The first thing you need to know about Tennessee Whiskey is that it isn’t Bourbon...or at least it isn't called Bourbon. Folks get this confused fromtime to time. The second thing you need to know is that, as far a we know it, there is only one small detail that legally differentiates it from regular ol' whiskey (as defined above), which is the process of charcoal mellowing.

During the charcoal mellowing process whiskey is slowly seeped through vats packed with charcoal. The charcoal used for mellowing must be made with the wood of sugar maple trees. To be labeled "Tennessee Whiskey" the spirit must be charcoal mellowed before aging. Some folks say that this removes too much flavor. Other folks say it makes the final product that much better.

For more information, check out our article on how to make whiskey.

Rye Whiskey

Rye whiskey is made from a fermented mash containing not less than 51 percent rye. It must come off of the still at no more than 160 proof and must be stored in charred new oak barrels. However, there is no minimum aging requirement, so one day will do! Food coloring may be (and probably will be) added. Rye whiskey is know for its spicy character and has gained a fair amount of popularity in recent years.

"Straight rye whiskey" must be aged for at least 2 years in new charred oak barrels and food coloring may not be added.

Wheat Whiskey

Wheat whiskey is a style of whiskey mashed with a grain bill primarily consisting of wheat. In fact, the mashing ingredients must be at least 51% wheat. It must come off of a still at no higher than 160 proof, and must be denatured (watered down) to 125 proof or less before aging. It must be aged in charred new oak barrels for at least one day and food coloring may be added.

"Straight wheat whiskey must be aged for at least 2 years in new charred oak barrels and coloring may not be added.

Corn Whiskey

Corn whiskey mash must contain at least 80% corn and it must come off of a still at 160 proof or less. There is no aging requirement whatsoever for corn whiskey. However, if aged, it may be stored in new charred oak containers and must enter the barrel at a proof no higher than 160. It may also be aged in used barrels and must enter the barrel at 125 proof or less. Additionally, manufacturers are not allowed to subject corn whiskey to any manner of "treatment with charred wood." We assume that this means, corn whiskey is not allowed to be filtered or "charcoal mellowed" like Tennessee Whiskey.

Check out our article on how to make corn whiskey for more info.

Malt Whiskey

In the United States malt whiskey must be produced from fermented mash including no less than 51% malted barley and aged in new charred oak barrels. If this whiskey is aged at least two years, contains no additives for taste or color, and has not been mixed with neutral alcohols or other types of whiskey, it can legally be called straight malt whiskey. If a whiskey is not straight malt but contains at least 51% straight malt whiskey, it must be called blended malt whiskey.

Scotch Whisky

There are several types of Scotch Whisky. We'll focus on Single Malt Scotch Whisky here. In a nutshell, there are two things you need to know about this style of alcohol. First, the Scottish spell "whiskey" differently than we do. They omit the "e" and spell it "whisky." If you plan on entering any spelling bee competitions in Scotland, remember this. It will definitely come up. Second, Single Malt Scotch is made with 100% malted barley.

Barley is a common ingredient in most beers and whisky but using 100% malted barley is primarily unique to Scotch. Distillers generally only use 15-20% malted grains in their recipes and the rest is not malted. In most cases, a grain-bill of 20% malt contains enough enzymes to convert the starch in the entire batch of grains into sugar. However, the whisky loving folks in Scotland insist that a grain bill of 100% malted grains produces the best whisky. Additionally, all Scotch whisky must be aged in oak barrels for at least three years. Scotch whisky distilleries often store their product in used Bourbon barrels. See the section below on Bourbon to find out why.

Moonshine

Keep in mind that this article is a review of the legal definitions of spirits made and sold in the United States. In this article, and on our site in general, we refer to moonshine that is legally sold on the shelves of liquor stores. That said, according to TTB rules, there are virtually no rules or regulations on what can be called moonshine, how it needs to be made, whether or not it needs to be aged, whether or not food coloring or artificial flavoring can be added, etc. To learn how commercial distillers make moonshine, check out our post on how to make moonshine.

Whiskey Recipes - Grains, Proof, and Aging (2025)

FAQs

How do you make whiskey aging faster? ›

Oak staves, which are thin strips of wood inserted into barrels to increase surface area when making spirits, have been proven to accelerate liquor maturation significantly.

What grains make the best whiskey? ›

Here is a quick rundown of the commonly used grains in your favorite whiskeys.
  • Corn. Corn grains are best for those who need an easy-drinking beverage. ...
  • Rye. If you prefer a little more intensity with your whiskey, rye adds a perfect amount of spice. ...
  • Barley. ...
  • Wheat. ...
  • Scotch Whisky. ...
  • Canadian Whisky. ...
  • Rye Whiskey. ...
  • Irish Whiskey.

How to prepare grains for distilling? ›

Distillation Process
  1. MILLING. Grain is milled, or ground, to expose the starches. ...
  2. COOKING. Cooking softens the grain to maximize starch conversion into sugar. ...
  3. FERMENTING. Yeast is added to begin the fermentation process of converting sugar into alcohol. ...
  4. DISTILLING. ...
  5. BARRELING.

What makes whiskey better with age? ›

A whisky draws its flavour from the wood that it matures in. The longer the whisky spends in the cask, the more flavour it will impart from the wood. The temperature that a cask is kept in will also have an impact on how quickly the flavour will be imparted from the wood.

Does aging whiskey increase proof? ›

It could be a small change, but it will change, even if it is only a fraction of a percent. If aged in the lower levels of the warehouse, the proof will decrease. If aged in the upper levels of the warehouse, it will increase.

How to speed up alcohol aging? ›

Many have turned to unorthodox aging methods to speed up the process, from using undersized barrels to ultrasonic sound waves. For some savvy distillers, inspiration lurks not in the barrel, but in the environment itself.

What grains does Jack Daniels use? ›

And no detail was more important than his mash bill, the delicate mix of grains that help shape our whiskey's flavor. Jack Daniel chose a well-considered recipe of 80% corn, 12% barley and 8% rye that we still use today. Using only No. 1 quality grade corn gives the mash an inviting sweetness.

What grain is used in Scottish whisky? ›

Scotch's main ingredients are barley, water and yeast, but can also be made from other whole grains that include maize (corn) or wheat At the beginning of its creation in 1494, all Scotch whisky was made from barley but, in the late 1700s distilleries began using wheat and cereal rye as ingredients in the Scotch.

What grain is Irish whiskey made from? ›

Irish whiskey is made with a blend of malted and unmalted barley in the pot still phase, whereas Scotch uses only malted barley (grain that has been soaked so that it begins to sprout).

How do you turn grain into malt? ›

The process of malting involves three main steps. The first is soaking the barley - also known as steeping - to awaken the dormant grain. Next, the grain is allowed to germinate and sprout. Finally, heating or kilning the barley produces its final color and flavor.

Do you leave grains in mash while fermenting? ›

Removing the grains prior to fermentation will mean that less tannins (polyphenols responsible for astringency in high concentrations) and other possibly off flavours are avoided.

What is the ratio of barley to water for whiskey? ›

The typical ratio of liquor to grist (L/KG) are 4:1 for the first water and 2:1 for the second water to produce 5000 Litres of wash at 8.5% ABV or 1060 OG. Two examples are shown; a 1000kg grist and a 1000lb grist.

Can you age whisky too long? ›

Whiskey that has been over aged can taste bitter or ashy because the wood flavor takes over the grains. Depending on the type of whiskey, where it was produced, and the quality of the wood barrels, anything from 5 to 20 years of aging will make the perfect spirit in your bar.

Is 12 year old scotch really 12 years old? ›

So if the interaction with wood is where “aging” happens, that means our hypothetical bottle of Macallan has always been 12 years old, even while it sat in a cabinet. Whiskey doesn't age in the bottle. In fact, it's quite inert. Assuming it's properly stored, whiskey won't change much itself in the bottle.

Does cheap whiskey get better with age? ›

It's true that it doesn't work like wine, people don't leave whisky in the bottle to improve its taste. However, factors such as oxidation and exposure to sunlight can change the taste of whisky that has been sitting on the shelf. Most enthusiasts will agree that the change is not for the better, however.

How do you mature whisky? ›

Interactions between the organic compounds in the newly distilled spirit and the lignin compounds in wood create a broad and full range of flavours, and aging in different types of oak can achieve incredible variations in taste. Scotch whisky must be matured in oak casks for a minimum of 3 years.

How do you store whiskey for aging? ›

Always store your whisky away from direct sunlight. Over time the sun's rays can potentially deteriorate the condition of a whisky, as well as cause the label to fade. Make sure your whisky stands tall. Whisky bottles should never be stored on their side, they should always be kept upright.

How do you make whiskey last longer? ›

Keep the collection consistently cool, but not too cold.

Experts recommend storing whiskey at a temperature of 15-20°C. If you're collecting both whiskey and wine, you may not want to store them together, since ideal temperatures for whiskey are at the higher end of the spectrum for ideal wine storage.

Does whiskey keep aging in bottle? ›

Whiskey doesn't age in the bottle. In fact, it's quite inert. Assuming it's properly stored, whiskey won't change much itself in the bottle. What change it does see has to do with oxygen exposure, light exposure, and temperature fluctuations—and all of these things are generally bad for it.

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