To obtain an oak flavor as if the wine was aged in a oak barrel you can use oak chips. Right? When would you put the oak chips in? I have a wooden oak barrel but it leaks and its a lot of work to get it working. It was actually used from Woodbridge Winery from California. It has there imprint logo on it, I am afraid that since it hasnt been used for such a long time, it would be nearly impossible to really clean it. So next step to get the oaky flavor would be the wooden chips.