If you are looking for oak that produces flavors which are closer to true barrel quality, then these Stave Segments are just right for you. Less end-grain than traditional oak cube means a slower extraction time and a longer contact time, which will lead to a softer, more rounded mouthfeel. Many professional winemakers who have used these segments have said the flavors produced seemed more like those from regular staves in a barrel. The recommended ratio for 100% new barrel flavor is about .5 lbs per 5 gallons of wine. Since the exraction is so slow, the minimum contact time is 16 weeks and they can be left on the wine for up to 18 months.