Originally Posted by
irishguy28
You're overlooking the fact that they also don't want vessels of any great size on board, into which the contents of many (legal) smaller bottles can be decanted, to concoct a greater volume of a dangerous/unstable/toxic liquid.
But just after security at T1 in MAN I am forced to walk through a duty free shop where I can buy a 1 Litre bottle of liquid, which I can then drink/empty and fill with my separate 100ml bottles.