We work with a small mill in France that produces some of the highest quality cooperage oak in the world. It was our work with this mill that led us to experimenting with secondary maturation of malt whiskies in casks fitted with new French oak heads. This is something no one else in Scotland does. The result is whisky with more character and complexity. We use this technique on about 40% of the whisky in Oak Cross and it results in a superior finished product.