Jefferson's Ocean bourbon is aged on the high seas, a technique that takes advantage of basic physical chemistry. The bottles sell for $200 a piece. Courtesy of OCEARCH hide caption

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In a $16 billion deal this week, Japanese beverage giant Suntory announced it plans to purchase Beam Inc., maker of Jim Beam and owner of other popular bourbon brands, including Maker's Mark. Bruce Schreiner/AP hide caption

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America's Signature Whiskey: Some craft distilleries, like Catoctin Creek in Virginia, are making a whiskey that's 100 percent rye to showcase the grain's spicy, peppery flavor. Courtesy of Catoctin Creek hide caption

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A bottle of Cleveland Whiskey's bourbon sits on a shelf with empty bottles at the company's distillery. Courtesy of David Kidd hide caption

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With too little distilled bourbon to meet demand, Maker's Mark is lowering the product's alcohol content from 90 to 84 proof. Ed Reinke/AP hide caption

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Templeton bottles, filled and almost corked. Noah Adams/NPR hide caption

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