Is one easier to use vs the other? Do you need extra aging time for the oak chips? When would put those in? Or when for tannins?
McJeff, on my current batches, I am planning on fermenting them until I reach my desired strength (in my case, dry, at the limit of the yeast's tolerance). Then, I will introduce my flavoring components, such as oak (and others like acids, herbal tinctures, and honey) to balance the flavor. I want to use oak because it makes it more tannic, and (just as important to me) it produces other flavors that I like, such as subtle caramel and vanilla.
My planned use will be 3/4 of an ounce of mixed medium and heavy toast oaks from France and the US, for at least a week, but I will be tasting to check. Maybe I will leave it in longer. I once left an ounce of heavy toast chips in for almost a month in a gallon -- and it didn't taste bad at all. Quite nice. I think if I had used medium or light toast oak left in that long, it might have been too woody.
I have not tried powdered tannins, but I am guessing that you would use them at the end as well, and then slowly add small amounts until you reach the tannic level that you want. I don't know what other flavoring components the powder might bring along with it.
Also, I have used oak to improve the flavor of bottles of spirits that I think may be lacking. Once they've done their job, the oak cubes or chips can be re-used immediately to impart flavors from that spirit to my latest batch of beer or mead. Just a thought on recycling. Gotta save the earth, you know.
