The closest I get to this is when one of my Pakistani workmates brings in generous samples of his Mum's own-recipe pakoras and bhajis. They are a world away from anything you could buy in a British supermarket. One time, after Ramadan, he brought in an enormous catering pot of chicken biryani for our night shift. Made with saffron and hard-boiled eggs, it lasted us two nights and was incredibly tasty and fragrant. Fantastic. Sometimes, I wish I had neighbours or workmates from Italy, France, Thailand, India or anywhere else with exotic cuisine.
I have little doubt that foreign cuisine restaurants in the UK are sufficiently authentic but when the nosh is from family recipes and is lovingly prepared for free, there is extra charm!