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Mulled wine (German: GlΓΌhwein, Czech: SvaΕΓ‘k) is a hot beverage made from wine and spices that's ubiquitous in Germany, Austria and the Czech Republic as well in the winter. The canonical place to drink it is at an outdoor Christmas market, although most pubs, bars etc will offer it as well. The one catch is that it's usually not the kind of thing you'd drink in "large quantities", but that's a relative measure.
You can find mulled wine in Ireland as well these days, but hot cider (alcoholic apple juice/beer) is a more traditional alternative. Irish coffee (hot coffee with whiskey) is also nice, but drinking more than one would be unusual due to the caffeine content.