Royal diet: The 'supreme delight' food the Queen refuses to eat – banned from royal menus

According to McGrady, who cooked for the Queen for 15 years, there is another ingredient banned from all royals menus: garlic.

“We can never serve anything with garlic or too much onions,” he explained.

However, he revealed the Queen “is absolutely a chocoholic.

“Anything we put on the menu that had chocolate on, she would choose, especially chocolate perfection pie.”