The late Queen was famously not a fan of rich, indulgent dishes and favoured smaller, healthy meals packed with fruits and vegetables.
While that all sounds very normal, it is possible that a selection of common fixtures on the monarch's breakfast menu that she was partial to in the morning that would have divided the nation.
Charles Oliver, a former servant, reveals in his book Dinner at Buckingham Palace that the late monarch and Princess Margaret were schooled by a palace chef on how to cook kippers, proving their taste for the dish.
And, interestingly, they weren't the only royals to have unique tastes at breakfast time as King Charles also follows a unique tradition.
Read more on ok.co.uk