peebee
Out of Control
That was definitely an invitation to view it! The "video" I've seen: Note it's not about Guinness! I never realised until I saw that video that the "high-low" setup was an Irish "thing", not Guinness's. I was also intrigued by the way they served "high-low" (high in first) which was the opposite to how I'd seen it elsewhere, but seems publicans were free to serve it however they saw best.What a fascinating video!
The Beervana article was even more intriguing but do note the "disclosure" warning at the beginning. Concerns the development of nitrogen conditioning by mathematician Michael Ash in the 1950s. Though I'm quite sure the suggestion that the "high-low" dispense was confined to Ireland is wrong ... I was told (decades ago) of fermenting Guinness being transported across on the ferry which I now take to mean the "high casks", not vats of fermenting beer sloshing about! High casks were particularly strong casks containing freshly fermented stout and a good proportion of unfermented wort.
The article about Michael Ash also kills off an argument I was having about "nitro" stout; that the nitrogen adds to the flavour where I was arguing the nitrogen adds nothing but dilutes the adverse flavours of excess CO2. Both wrong! The nitrogen removes perceptions of flavours! Apparently, there were (and still are?) many complaints about it when nitrogen was introduced.
Finally ... @Sadfield mentions acidity being the inevitable consequence of wooden casks. Brettanomyces? "Brett" is still considered by some to be the acidic element in "Special Export" (Guinness for John Martin's Belgium enterprises ... of which I've got a few bottles in me cupboard!). But does anyone here have memories of Guinness stored in wood (pre-1975 for sure)? Perhaps Guinness do attempt to "emulate" these acidic traces as they do seem to be keen to keep memories of pre-1950s Guinness Stout alive?
Something I looked up from those articles: Guinness's parent company "Diageo" is London registered! That must wind up the Irish. I don't blame 'em if it does! Well ... and a long-established London brewer (Fullers) is owned by the Japanese. Geesh!