The most common oak casks
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- By burning the cask out, the light American oak develops its typical toast and vanilla aromas as well as coconut and caramel aromas
- Apart from these aromas, former bourbon casks also dispense strong oak notes
- Each cask may only be used once for bourbon. The maturation of bourbon whiskey normally takes two years
- About 90 per cent of the casks used in Scotland are former bourbon casks. Normally, those casks are smaller than former sherry casks.
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- The wooden cask is either made of light American or of dark European oak. The casks are “toasted”
- Due to the initial filling with sherry, the cask develops an intensive colour and an overwhelming sweetness with the aroma of dried fruits
- The casks are used repeatedly for the maturation of sherry
- Depending on quality, former sherry casks are six to ten times more expensive than former bourbon casks.
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