Anyway … enough o’ that 
Worrabout this abomination: 
As described by Colleen Graham on about food: cocktails.about.com/od/cocktailr … _n_tan.htm
[size=200]"[/size][i]The Black and Tan has become a popular beer drink. It is a layered drink of a pale ale (ie. Bass, Boulevard, Sierra Nevada) on the bottom and Guinness Stout on the top. These two beers make a perfect “black and tan” layer in the glass if they’re poured correctly. As you drink this beer mix you’ll find the two stay layered and that the finish is the complete opposite of the beginning.
This drink has transformed modern bar taps and many are now decorated with a Black and Tan spoon, which is the key to those great layers of this and similar beer drinks.[/i][size=200]"[/size] 
You can’t blame that on climate change!
When I was sixteen, ‘Black-n-Tan’ was my drink. The traditional B&T was a half pint of mild with a bottle of sweet, milk stout, Mackeson slowly poured into it,
…. unless, like me, you specified 'bitter-n-draught Guinness. This deviation from the norm, always earned me (at least), a look of askance from the barman/barmaid. I’m wondering what their reaction would’ve been if I’d asked them to produce one of Colleen’s cocktails! Well … I don’t wonder, cos I know! However, common decency and my sense of propriety forbids further elucidation.
B&T remained my preference, until being posted to what was then Western Germany, as a member of that redoubtable body of Brits that stood between the massed ranks of Bolshevik hordes (I said hordes not whores!), and the rest of the Western Europe, where I developed a taste for Amstel, a Dutch beer.
Upon my return to UK 1965.I reverted to type and reacquainted myself with B&T Until that is, the evening I stood for the first time in the bar of an Irish dance hall, in city centre Manchester, in 1967. My request for a Black-n-Tan, was met with a hostile stare from the barman, and likewise from most of the Irish blokes within earshot, of the thick Englishman. I should’ve know better, because I wasn’t ignorant of the atrocious history of the Black and Tans in Ireland. In my naiveté, I never associated my B&T with the thugs we deployed in Ireland in the 1920s. The guy I was with at the time pointed out my faux pas. On my next visit to the bar, I went, ‘Over to the Dark Side’, and ordered a pint of Guinness. The rest is history, as they say.
I suppose Colleen’s cocktail would be regarded as ‘Progressive and trendy’, in some quarters, but call me a troglodyte dinosaurish philistine, if y’ like, but all it proves to me is that the words Progress and trendy have both negative as well as positive connotations. Dunit? 
Each to his own, though … each to his own.
‘So it goes’.
Ah well … here endeth the lesson. 
Vic (HAW extraordinaire)
no more than y’ deserve!
it has, annit?