What Is Mash?
By Alchemist G.G. Wilkins
Pittsfield, New Hampshire
If you enjoy a fine whiskey, bourbon, vodka, rum, brandy, or traditional New England spirit, you have probably heard people talk about copper stills, fermentation, and distillation. However, one of the most important steps in the entire process happens long before a drop ever enters a still. That process is known as mashing.
As Dr. G.G. Wilkins understood during his colorful career in 19th-century Pittsfield, New Hampshire, distillation begins not with copper, but with grain. Long before a spirit can be distilled, the raw ingredients must first be prepared in a way that allows nature to perform its work. This preparation is known as creating a mash.
Mashing is the process of combining grains such as corn, barley, rye, wheat, or other starch-rich ingredients with water and heat. During this process, naturally occurring enzymes convert starches into fermentable sugars. These sugars later become the foundation for fermentation and eventually distillation.
The resulting mixture is known as mash. Without a properly prepared mash, there can be no successful fermentation and no quality distilled product. For centuries, master distillers have considered mash preparation one of the most important and often overlooked aspects of the distillation process.
Throughout history there have been several different mashing techniques. Two of the most common methods are infusion mashing and decoction mashing. Infusion mashing raises temperatures through direct heating or the addition of heated water. Decoction mashing involves removing a portion of the grain mixture, boiling it separately, and then returning it to the mash. This traditional technique helps extract additional starches and flavors from the grain.
The science behind mashing has changed very little over the centuries. While equipment has improved, the fundamental principles remain the same. Ancient distillers, brewers, and craftsmen understood that controlling temperature, timing, and ingredients was essential to producing quality results.
As an inventor and copper craftsman from Pittsfield, New Hampshire, I have always appreciated the connection between traditional knowledge and modern innovation. While the process of mashing remains rooted in history, modern copper still designs can help preserve the flavors and aromas created during this important stage.
Our patented FlameFlow™ technology was developed with efficiency and temperature control in mind. Improved heat distribution can help reduce hot spots and provide more consistent heating throughout the distillation process. When time and effort have been invested in producing a quality mash, every step afterward becomes equally important.
The history of distillation is filled with innovators, entrepreneurs, and craftsmen who sought better ways to refine ancient techniques. Dr. G.G. Wilkins himself became known throughout New Hampshire as a colorful businessman, promoter, physician, and distilling enthusiast whose adventures became the subject of historical study more than a century later. His story reminds us that distillation has always been about more than machinery—it is about knowledge, experimentation, and craftsmanship.
Whether your interests lie in traditional spirits, distilled water, essential oils, botanical extracts, or the history of American distillation, understanding mash is one of the first steps toward understanding the entire process.
Before there was a copper still, there was a mash. And before there was a finished product, there was the knowledge required to create it.
— Alchemist G.G. Wilkins
Inventor, Craftsman, Historian, and Student of Distillation
Pittsfield, New Hampshire