White American oak is much used for making wine barrels. American barrels are cheaper than European ones, as the wood has a different micro-structure, and can be sawn rather than split, thus with less wastage. Wines aged in American oak typically have strong flavours of vanilla and grilled coconut.
American oak has become increasingly popular due to its low cost and is primarily used for aging intensely flavored wines. Good examples would include Cabernet Sauvignon, Zinfandel, and Merlot.