I just spent $150 on 10 packages of medium french oak spirals. As you know, packages come with two spirals. I typically, depending on variety, use one or two spirals per 6 gallon carboy during bulk aging. At times, I exchange the chips from some kits for spirals because of the clogging issues during racking caused by chips. Excluding the fermentation use, on average my $150 enhances 10 carboys as most of the time I use two per carboy.

At my local store, I can buy 10 pounds of medium toast french oak cubes for $150. I have noticed that when a wine kit includes oak cubes it's either 30gm or 60gm. A pound of cubes is approximately 450gm. 450gm x 10lb = 4500gm or 150 30gm packages of oak cubes.

This would tell me that for $150, I could oak 75 carboys if using 60gm of cubes which is equivalent to the maximum I've seen included in wine kits.

Question is: Is one oak spiral equivalent to 30gm of oak cubes? Do oak cubes leach the same amount of oak essence as a spiral?

What say you? What have I left out in my logic and/or math?