Many people believe you shouldn't mess with a classic recipe – even if you're .

We can all get a bit territorial over our favourite . Experimenting with new ingredients isn't a bad thing, but sometimes, when you're craving a traditional , it can boil your blood when you're served a version that contains an ingredient that doesn't belong or isn't quite how your mum used to make it.

These annoying alterations can happen with any dish, from cottage pie to beans on toast, and not even celebrity chefs are safe from the public's wrath when one of these outlandish changes is proposed. Jamie Oliver learnt that the hard way recently after he shared his recipe for spaghetti carbonara and added one ingredient that sent people into a frenzy.

In a video on his page, Jamie decided to mix things up and ditched the traditional spaghetti carbonara for something a bit different. Carbonara is an Italian dish made with fatty cured pork - often substituted for bacon lardons - hard cheese, eggs, and salt and pepper.

What it doesn't include is mushrooms. And Jamie's decision to add them to his recipe left people fuming in his comments section as they said that it should be called a carbonara if it isn't made the traditional way.

In his video, Jamie said the dish came with a "delicious rosemary, parmesan, and crispy bacon sauce", and admitted the "Italians will not be happy" just before adding in his bizarre extra ingredients - including rosemary and button mushrooms.

He said, "The Italians will not be happy about this because it's not classic, but that's okay because it's full of love and salt, and that's what they appreciate. Rosemary is definitely not in the classic recipe, but I like it."

And he was quite right with his assumption, as Italians and other foodies were quick to rush to the comments to express their fury at Jamie's recipe change. Some admitted the dish looked "delicious", but said that doesn't justify calling it a carbonara when it deviates from the traditional recipe.

One person said: "Do not call it carbonara, please." Another added: "I'm sure It tastes really good. Just not a carbonara." While a third also fumed: "Don't call it carbonara then. Call it bacon rosemary mushroom pasta."

However, one commenter agreed that they "always put mushrooms" in their carbonara dishes.

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