The Queen's preferred cocktail is very "unique to her", according to royal commentators.
The monarch's enjoyment of Dubonnet, a sweet, aromatised wine-based aperitif, was highlighted as slightly "bizarre" given its history and present popularity.
Noah Rothbaum, one of the world's leading cocktail experts, spoke to the Royally Obsessed podcast about the Royal Family's drink choices.
He told listeners: "She has her Dubonnet cocktail, which is like two parts Dubonnet to one part gin.
"It's a little weird because there's a great schism in Dubonnets.
"The Dubonnet that's produced in Europe is different than the Dubonnet that's produced in America.
"The formulas are slightly different - though the one in America now tastes more like the one in Europe."
Mr Rothbaum continued: "It was very popular in the 60s and 70s and then kind of disappeared for a while.
"In other parts of the world, they are enduringly popular.
"So it makes a lot of sense that the Queen would be a fan of it.
"But it is sort of bizarre, it's not a traditional Pimms cup."
Host Rachel Bowie added: "It's not something that most people have even tried before.
"I've even had a hard time finding it in a store. "It's very unique to her."
