Kate Middleton reportedly always packs snacks for her children when traveling. The hands-on mom has already traveled to Canada, Poland and Germany with Prince George and Princess Charlotte.

During her trip to the Royal Society of Medicine in 2017, the Duchess of Cambridge was photographed with a Tupperware full of snacks placed on the car seat armrest. The snacks are most likely for her children.

Harriet Mallinson, a journalist for Express, said that Kate never goes without snacks when traveling with her kids overseas or domestically to make sure that they will not go hungry. Prince George and Princess Charlotte particularly enjoy Italian food such as pizza and pasta.

In February of last year, the mom of three told royal fans during her visit to a primary school, as part of her charity work for Place2Be, that Princess Charlotte loves eating olives. Cheesy pasta is also something that Kate’s children and the rest of her family enjoy eating.

Meanwhile, the Cambridges are not the only ones who have a favorite food. Queen Elizabeth II also always travels with a slice of chocolate biscuit cake. Darren McGrady, Her Majesty’s former personal chef, told Recipe Plus that the chocolate biscuit cake is the only cake that goes back, again and again, every day until it’s gone.

“She’ll take a small slice every day until eventually there is only one tiny piece but you have to send that up, she wants to finish the whole of that cake,” McGrady said.

McGrady also said that the Queen is obsessed with the cake, that’s why her senior chef follows her on the next train with leftovers of the pastry should Her Majesty leave even just a sliver behind. And the Windsor staff had been asked to steer clear of the cake because the Queen knows when it goes missing.

But when the Queen traveled to the Gambia in 1979, she brought a much more surprising item to her trip. Robert Hardman said in the book “Queen Of The World” that Her Majesty has 12-dozen bottles of tonic water and 6-dozen sodas. “The Queen would bring her own spirits to go with it,” Hardman said.

Princess Charlotte, Prince George and Kate Middleton Catherine, Duchess of Cambridge; Prince George of Cambridge; and Princess Charlotte of Cambridge attend the Maserati Royal Charity Polo Trophy at Beaufort Park on June 10, 2018, in Gloucester, England. Samir Hussein/WireImage/Getty Image