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by talldan 3565 days ago
It'd be strange for it not to be an ingredient. As far as I understand it's added directly to the wort prior to fermentation.
1 comments

Yeah, but it's completely removed before bottling. Is a spoon an ingredient?
How is it removed? Here's some details on brewing with Isinglass: http://byo.com/malt/item/645-fining-your-beer-techniques

I've only done homebrew - but I can't see how a powder, moss or tablet can be removed again once it has mostly dissolved.

I've only done homebrew and never used isinglass....

But when I used gelatin it set the yeast sediment into a jelly-like layer at the bottom of the fermentation vessel, so when I bottled I'm not sure there was really any in the finished product. The same may apply here.

I think the point of all of them is to encourage sedimentation, and thus they shouldn't be significantly present in the finished product

That's a good point. It's called the 'trub' that's left at the bottom of the fermenter. So trace amounts are still present, I'd imagine.