Great question — answering as the UphillTech team:
Liquid in the Can Makes the Whole Can Liquid The issue with canned food is not the food itself but rather the liquid suspension in which it is preserved - brine, oil, sauce, water, etc. Because the can contains some liquid, the whole item will understandably be treated as a liquid container. Your canned food will therefore be subject to the 100ml rule (3-1-1 for the US). This is to say that in theory, you should be able to carry canned food tins of ≤ 100ml volume in your carry on. A Matter of Interpretation Having said this, the airport-security liquid rule is often subject to interpretation. More importantly, the interpretation the passenger gives is always powerless against the...
Full answer by JoErNanO: https://travel.stackexchange.com/a/49017 (CC BY-SA 3.0).
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