Jet2 has informed passengers that packing a specific type of item, readily obtainable at supermarkets, could result in additional time spent at security while checks are conducted. The matter emerged after a passenger with a forthcoming flight with the carrier enquired whether she could bring the item on board.

Taking to X, the passenger, Andrea, asked: "@Jet2tweets Hi, I'm flying from UK to Spain. Am I allowed to take sachets of slim shakes with me? I've read conflicting advice." Jet2 replied: "Hi Andrea, thanks for reaching out. Will you be carrying these sachets in your hand luggage or hold luggage? ^Ellie."

Andrea responded: "Hi, whichever bag that Jet2 allows me to carry them in." The airline replied: "You shouldn't have any issues with carrying sachets in either your hand or hold luggage. If you can send us a picture or link to the ones you're wanting to bring we can double-check this. ^Ellie."

Andrea subsequently shared a photograph of the sachets, captioning it: "Tesco Slim meal replacement powder." Jet2 responded: "Thank you, Andrea. You shouldn't have any issues with carrying these in either your hand or hold luggage. If you were to carry them in your hand luggage, you may be asked to taste/test these at security. ^Ellie."

Most airports recommend travellers pack food and powders in hold luggage wherever feasible. While these items are typically permitted in hand luggage, they can obscure images on the X-ray machine. Such items could also be mistaken for suspicious packages, so storing them in the hold will help reduce the need for additional checks. Passengers who must carry these items on board should allow themselves extra time at security, reports the Mirror.

Certain countries have particularly strict policies concerning food and powder. As Heathrow Airport points out, for those flying to the US, "restrictions are in place for passengers carrying powders of over 350ml (drinks can size) or 350g".

It adds: "These items are prohibited from carriage in the cabin. Medical powders such as medicines, baby powders and human ashes are still permitted but subject to further checks. Passengers are asked to make sure items are carried in original packaging where possible with the seals intact and where appropriate proof of authenticity such as a prescription.

It is recommended that travellers place large powders such as protein powder and flour, as well as large makeup containers, in their checked baggage to avoid security hold-ups. Keeping everything in its original, sealed packaging is strongly advised.

Further information regarding hand luggage restrictions at UK airports is available on the Gov.uk website. With regard to 'food and powders', the site states: "Food items and powders in your hand luggage can obstruct images on x-ray machines. Your bags may need to be checked again manually by security. You can put these items in your hold luggage to minimise delays."

"Powders purchased in duty free may be carried provided they are packaged in a security tamper evident bag (STEB) inside of which is a receipt proving the item has been purchased airside at an airport."