The popular food item banned from airport security even though it's not a liquid

The price of food at airports is increasing, with shops charging up to 48 percent more for snacks and drinks at airports and railway stations than on the high street, according to new research by The Mirror. Many airlines also charge passengers for onboard meals, such as British Airways who replaced their complimentary dining on short-haul routes with a paid menu.

As a result, it's no surprise that more travellers are bringing their own snacks to the airport. However, there are some common food items which could lead to you being stopped and searched at security, and even losing your snacks.

While changes are being implemented at select airports across the UK, liquid rules remain in place at many flight hubs both domestically and internationally, reports the Express.

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At the time of writing, the UK Government website states: "If you do take liquids in your hand luggage containers must hold no more than 100ml. Containers must be in a single, transparent, resealable plastic bag, which holds no more than a litre and measures approximately 20cm x 20cm and contents must fit comfortably inside the bag so it can be sealed."

While most people know water and drinks are included in the liquid ban, there are some foods you may not realise fall into the liquid category. One major culprit is hummus.

The Middle Eastern dip made from chickpeas and tahini may be more of a paste than a liquid, but it can still be confiscated from travellers at security. Other dips such as guacamole or salsa are also subject to the same regulations.

A travel expert from Ski Vertigo commented: "Certain food items, especially those that are liquid or gel-like, such as peanut butter, jam, or yoghurt, are subject to the liquids rule."

"Solid foods generally pass through security without issues, but any food that can be spread, squirted, or poured may be confiscated if it exceeds the allowed liquid limits. Food items can also trigger additional screening if they appear suspicious on the X-ray."

While some UK airports have started using advanced CT scanners, which could potentially do away with the current restrictions on liquids, the adoption of this technology has been patchy across different hubs. Even if you're flying out from a UK airport equipped with these new scanners, remember that many international airports still enforce the traditional liquid rules.

A Department of Transport spokesperson advised: "Passengers should continue to check security requirements with their departure airport before travelling."

This suggests that it's wise for passengers to adhere to the existing liquid regulations until further notice. As of now, there is no confirmed date for when the liquid rules will be completely phased out.