Attention wine lovers! Before you pour another glass, you might want to know what’s really swirling inside it.

U.S. winemaker Charles Smith told FOX Business’ Stuart Varney on "Varney & Co." that plenty of American wines are hiding a not-so-tasty secret—dozens of additives that never make it onto the label.

"There’s over 70 ingredients you can put in American wine— really scary things ," Smith said. "Most people believe that wine is just grapes, and it should be, as it’s been for centuries."

Smith believes Americans deserve "full transparency" when it comes to knowing what they’re sipping.

Smith, known for his bold style and creative blends, says wineries should be required to list ingredients, whether it’s on the bottle, through a QR code, or online.

"You don't know if you happen

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