So, can you bring that huge bottle of shampoo? Yes, as long as it’s under 1 liter. Can you bring a gallon of milk for your cereal? Technically yes, but why would you? Eurostar is not a Costco run. The real secret is: pack light on liquids, because the only thing worse than a security check is dragging a 20-pound bag of liquid laundry detergent up three flights of stairs at Gare du Nord.
Now go forth, hydrated traveler. Bring your tiny airplane bottles of gin, your oversized water bottle, and your emotional support maple syrup. Just don’t be the person who makes the security guard sigh. That’s my job.