If you're someone who likes to get to the airport early before a holiday abroad, you'll be well used to being at the mercy of terminal prices for food and drink while you wait for your flight.
Of course, with drinks, you have little option to save money, as you are not allowed to take more than 100ml of liquids through security, due to security issues.
However, many of us will not be aware that there are in fact different rules for food though - and you could save a packet by bringing your own meal with you to the airport.
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A post on Newcastle International Airport's Facebook page even highlights that you can take some food through security, reports Chronicle Live.
The airport uploaded a customer's photo of their Greggs' steak bake next to an airport pint and prosecco to their official social media page - as any visitor to that airport knows, Greggs is before security, not after.
"I did not know that you could take Greggs through," replied one Newcastle passenger.
"We flew on Thursday and I could have had a bag full of vegan sausage rolls!" said another.
What are the rules for taking food through airport security?
You can take food through airport security as long as it's solid. If you are taking food with you, airports advise allowing yourself more time to get through security.
Food is allowed in your hand luggage although it does recommend putting food in your hold luggage. But depending on where you travel to, you may not be able to take fresh food in your hold luggage.
The rules allow you to take food bought before security on board, as long as is not "liquid or semi-liquid" like yoghurt, jam, soup, honey or syrups.
A sandwich, salad, cake or pasty should be fine. Essentially, if it's got a lot of liquid, don't bring it.
Edinburgh Airport says: "You’re allowed to take food and powders in your hand luggage, but it’s easiest to pack them in the hold if you can. Food and powders often block images on the x-ray machine or are sometimes mistaken as suspicious items. We’d appreciate you packing them in the hold to stop any hold-ups! If you don’t have that option just make sure to allow extra time for any additional security checks that might be needed."
Gov.UK confirms the rules for British airports. Again, they say you can take food through security in your hand luggage, but they advise that it may cause delays as your bags will be more likely to require manual checking.
The UK Government says: "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."
What food can you NOT take through airport security?
You can not take liquids past security if they are in containers that hold more than 100ml.
Gov.uk says that includes "liquid or semi-liquid foods" like soup, jam, honey and syrups. So if your food is liquid based or runny - potentially including items like hummus - then it shouldn't be allowed through airport security. There are exceptions for this for baby food.
Since the UK left the EU, there are new rules about what you can bring from Britain to EU countries, including the likes of Spain, France, Portugal, Netherlands and Italy.
"If you travel to the EU from a non-EU country, you are not allowed to bring any meat or dairy products with you," says the European Union.
You can bring up to 2kg of fruit, vegetables or non-meat/dairy products in your hold luggage, under the EU rules. So, if you're bringing a sandwich or pasty on the plane, eat it before you land - although you might get away with a Greggs Vegan sausage roll.
Those who do not declare those products and are caught face a potential fine.
