George Thornton from Home Brewing Co / The Homebrewer in San Diego, explains some of the basics about adding oak character to your fermented beverages.
Some basic details include :
The differences between American, French, and Hungarian Oak (American Oak tends to have wider tree rings, and thus can be more porous and can provide more intense characteristics compared to French or Hungarian oak.
The different types of oak products, and the different processes you can use to add oak to your beers.