unimportant spelling differences
Quite.The spelling differences are neither here nor there really. What's more interesting is speech patterns which vary not only by country but also byregion, educational level, class, sex, and general outlook on life. Studied a lot in English, exists a lot in Arabic and is also noticeable, even to a relative outsider, in Polish. It's very related to something called ethnosemantics which seems interesting but is fairly new to me.
Malt liquor = stronger than usual beer
Sounds a bit like barley Wine (more beer than wine). Old fashioned and popular every few years with university students. I always associate it with older working class northern ladies who drink too much and have big hairdos.