While bourbon barrels are made of white oak, the bung, or stopper, is typically made of poplar. That’s because poplar is a soft wood that swells when it gets wet, which makes for a nice tight seal.
While bourbon barrels are made of white oak, the bung, or stopper, is typically made of poplar. That’s because poplar is a soft wood that swells when it gets wet, which makes for a nice tight seal.
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