When it comes to traditional recipes, there are few things we love more than an unlikely origin story, ideally one born out of clumsiness or forgetfulness. The bigger the kitchen pratfall, the more delicious the product. Setting pancakes on fire? Accidental crêpe Suzette! Nothing in the restaurant apart from lettuce and some pantry ingredients? The Caesar salad is born! Muck up a cake you’ve made hundreds of times and end up with a squidgy mess? The St Louis gooey butter cake is even more popular than the original recipe!

There are few bungling origin stories neater than that of the tarte...