We all know that what passes as butter out foreign is very different to home, so some of may want to bring a few packets along for the toast in the morning, or perhaps to a relative living abroad.

Therefore, I was alarmed to learn that getting Kerrygold on an airplane is not that simple.

I contacted the Dublin Airport Authority (DAA) to find out what the story is, and it happens that butter is classed under the liquids and gels category. This means, just like shampoo, that it has to weigh under 100ml and be placed in a transparent resealable plastic bag in order to pass security.

Other commonly surrendered items include jams, relishes and sauces – but what happens to them when left behind?

A DAA spokesperson said: "We make hampers out of items surrendered and these are used at fundraising events for DAA's charity partners. This year, our three charity partners are MS Ireland, Merchant’s Quay Ireland and My Canine Companion for Autism."

But what about Tayto crisps and Clonakilty sausages? Can they be brought through security?

"Any food can be carried in hand luggage though security screening once it fits through the x-ray machine and meets the EU liquids and gels/pastes regulations.

"Some airlines have specific rules/requirements regarding food items such as nuts because they can cause allergic reactions."

So there you have it – be well prepared before you travel, or prepare for disappointment.