I see this being as honest as possible. "Barrel aged" means "aged inside the barrel," and they didn't say that. If you say "cocoa nib porter" or "hibiscus blossom lager" it suggests that those ingredients were inside a vessel at some point. Bourbon barrel, in little pieces, was in fact in there, so "bourbon barrel ale." Any more precise description would not be concise enough for the main text on the label. As long is it's in the fine print somewhere, I'd say it's not misleading. I seem to recall plenty of beers "aged on wood," not "in wood." Indeed, the Trillium allegation is of a very different nature. I brought it up to make, by contrast, precisely the point that NB is not being deceptive.
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