The porous character of Wooden permits it to soak up a big level of that sherry flavor, and that is then imparted for the whisky eventually. The appreciable Expense and effort necessary in sourcing and making ready these barrels are why they're usually applied only in top quality Scotch whiskies. https://macallan-18-label66543.pointblog.net/a-review-of-macallan-s-18-years-73033143