Granama1, nothing strange about the by-product, though I might argue it’s an essential component rather than a by-product. You would notice if it wasn’t there.
Agree about the title, especially if it goes through the process
Yes, I agree, it's quite essential, although an excess of it may be produced...unless it's something like the title, in which case it all seems to be included. 😄
Piffleworthy. I don’t think the title is ambiguous. A famous antipodean description of the thematic product could be regarded as wordplay that leads you precisely to the puzzle title.