I have a question about oak measurement be it chips or cubes. When someone or a kit manufacturer says to add 3 ounces of oak, do they mean by weight or volume? I purchased an 8 ounce package of French oak chips. Thinking I would have enough for a couple of 6 gallon juice buckets with a little left over, I weighed 3 ounces for a Chilean Carmenere I was making. It took the entire 8 ounce package. I then put the entire 8 ounces in a measuring cup and sure enough, it was by volume.