Like to BYO when you head overseas? The laws of how much duty-free liquor you can bring in vary enormously from one country to another, and comparison site finder.com.au has done some digging on the subject.
If you're travelling to Germany for example, you could fill your entire airline baggage allowance with booze.
The duty-free allowance for Germany is a massive-hangover inducing 22 litres, although 16 litres of that is for beer, four for non-sparkling wine and two litres of liquor under 22 per cent alcohol.
In Britain it's just a shade less, 18 litres total comprised of 16 litres of beer or 4 litres of wine, plus two litres of liquor under 22 per cent or one litre of over 22 per cent.
Asian nations generally have much lesser amounts. Taiwan, Hong Kong, South Korea, Thailand, Indonesia, Philippines and Malaysia allow just one litre while Vietnam, Singapore and Japan set the bar higher, at three litres.
The reason Germany and Britain have such a high allowance is down to their membership of the European Union.
Their citizens will often travel to other nations within the EU, and particularly to the larger wine-producing countries including Italy, France and Spain, and stock up with beers and wines, and the EU customs union is liberal when it comes to transporting goods across members' frontiers for personal consumption.
In Australia the duty-free limit is 2.25 litres of any alcoholic beverages per passenger aged 18 or over.