As with anything, it wasn’t long until politicians got involved.
“I will not touch bread if it’s moist,” she added.
“I’m not a sandwich person, I don’t think sandwiches are a real food, it’s what you have for breakfast.”
Sir Keir’s spokesperson said: “I think he was surprised to hear that the leader of the opposition has a steak brought in for lunch. The prime minister is quite happy with a sandwich lunch.”
After another newsy week for sandwiches, here are some of the fillings made famous by the great and good.
The sandwich wasn’t a good look for Ed from any angle
Jeremy Selwyn
The bacon sandwich: Made famous by Ed Miliband
The tuna sandwich: Made famous by Sir Keir Starmer
Having had a lunch-disaster-free campaign, Sir Keir Starmer is now a prime minister who responded to sandwich-phobe Kemi Badenoch to say he enjoys a tuna filling.
Fools gold: Made famous by Elvis Presley
Towards the end, the king of rock ‘n’ roll enjoyed watching three TVs at once with his famous fool’s gold loaf – a hollowed out French pan with peanut butter, bananas and bacon. The episode is a plot strand for the 2014 romcom What If?
The ham and cheese sandwich: Made famous by Jacob Rees-Mogg
In his new reality series, viewers are treated to the sight of man of the people, Jacob “Jake from the pub” Rees-Mogg eating a ham and cheese sandwich from Greggs. He never mentions his favourite sandwich post-election, for whatever reason.
Ten feet of food poisoning: Made famous by Homer Simpson
Homer fails to eat a 10ft sandwich before its expiry date – and misses his chance to go to Duff Gardens when he contracts food poisoning. The classic clip is said to be inspired by a real-life illness suffered by one of the writers.
The World’s Greatest Sandwich: Made famous by Adam Sandler
Adam Sandler’s 2004 comedy Spanglish was a flop upon release but it is fondly remembered for its sandwich – which his character, John Clasky, dubs as the World’s Greatest. You can recreate it with bacon, sourdough or white bread, Monterey jack cheese, mayonnaise, butter lettuce, tomato, egg and salt and pepper.
Whitefish salad sandwich: Made famous by Larry David
Curb Your Enthusiasm brought audiences greatness between bread thanks to this concoction, featuring a bagel, cream cheese, sable fish, onion and dressing. It didn’t particularly inspire one reviewer when tried for real by All Recipes.
No sandwich: Made famous by Ross from Friends
“I still can’t believe someone ate it.”