🍓 Jam / jelly

A standard jam jar — typically 340g or larger — will be confiscated at the checkpoint because it exceeds the 100ml gel limit. TSA and equivalent agencies classify jams, jellies, and preserves as gels, so the liquid rules apply even though the jar feels solid. You'll have to leave it behind unless you can check your bag before going through security.

The gel classification for jam is consistent across the US, UK, EU, Canada, Australia, and most other major aviation systems, so you'll face the same 100ml limit everywhere. There are no regions where a full-size jar of jam is waved through security in carry-on.

Screeners are trained to classify spreads, preserves, and jellies as gels, and the rule is applied consistently — there's no special category for artisan or homemade jam. If you try to argue it's a solid food, screeners will almost always still remove it if it exceeds 100ml. Mini jam jars of 100ml or less will pass through without issue.

Pack any full-size jam jars in your checked baggage, well cushioned and sealed in a zip-lock bag in case they break. If you want jam in carry-on, look for mini jars of 100ml or less — these fit in your quart-sized liquids bag. Alternatively, check if airport shops sell the jam you want after security.