That's absolutely right ... nothing technical about it, just like I was saying. Presented by the BBC's then Northern Ireland reporter Larry McCoubrey. Probably not a renowned "Beer Expert"? There's nothing there to further the understanding, though maybe much to
confuse any understanding? But we've got Protz who does certainly has some standing as a "Beer Expert". Though he's not adding much for
this debate? A snippet saying "releasing all the pressure from one of them" ... well, not entirely accurate but could be out of context: "Venting" releases all the pressure but over time so as to give at least some of the dissolved CO
2 chance to dissipate (otherwise the released pressure just reappears!). That could take a day or so to get down to one volume or so of dissolved carbon dioxide.
Watch out that there's some mixing up of "Porter" and "Stout" in the clips. I fell into that trap. It's unlikely they bothered to "age" a 3% ABV Porter, even just a portion? (And it's age and acidity that's the subject behind this thread).
Not there yet, but at least there's none of the usual claims of magic or other "unknown" processes.
Yet.