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Video Tip: How Fermentation Influences Whiskey Flavor

There’s more to whiskey than grain alcohol and a barrel. Fermentation can do more than create ethanol—it also creates flavors that will be further developed by the still and the wood. Sydney Jones, supervisor and lead distillery technician at Heaven Hill in Bardstown, Kentucky, explains the process and the wider potential.

From ingredient selection and fermentation to distillation and maturation, each part in the whiskey-making process includes many different, specific choices that can affect what’s possible in the later stages and in the flavor of the final spirit.

In this 57-minute video course—available to Spirits & Distilling subscribers—Heaven Hill distiller Sydney Jones delves into those various details.

Along the way, she discusses:

  • the definitions and limitations of rye and bourbon
  • different types of oak as sources of flavor
  • experimenting with different varieties of corn, rye, wheat, malt—and alternative grains, such as rice
  • using fermentation and yeast strains to drive specific flavors, including spice
  • why you should treat your yeast like a pet
  • why distillation deserves more attention as a driver of whiskey flavor
  • how different types of still—pot, column, hybrid—can affect the distillate’s character and maturation time
  • making cuts—heads, hearts, tails—and how those affect flavor and maturation
  • the many variables of barrel aging and how they affect the whiskey,including climate, entry proof, char, toast level... and, of course, time
  • why toast can be more influential than char in barrel-driven flavors
  • methods of blending for consistency or to create unique products

And more.