For me Food (besides of people I love) is home.
Food makes you instantly connect to a place or person. Even though in case of a person one might argue drinks will do the trick no matter what.
Anyhow, Food.
The moment you taste a certain food it will automatically take you back. It is not necessarily the food itself, but actually taste. And nothing is nicer than being instantly taken back home, to mum, putting her hand on your head, checking if all is ok.
My mum was envied by all neighbour mums, as she was the only one who could get vegetable into us kids. Her tick: she pureed the vegetable soup and put little sausages in – we all loved it.
And this is why it is called comfort food i guess.
For me that would be Curry Wurst Schränke or rot weiß (Curry Wurst with Chips (French Fries), ketchup and Mayonnaise).
One time after I spend 3 month eating of lobster and oysters in the north east of the USA, I came back and someone offered me a good meal, I said: could I have a curry wurst and a Joghurt as desert?
For me the best one can be found here:
Curry Wurst, Hohe Strasse 4-8, Cologne, Germany
Or
Curry B., Breite Straße 120, Cologne, Germany.
These are not fancy ones with different levels of heat or restaurants. Just decent good German junk food, table outside, ordering at the counter, etc. Only bad side: they do not understand “Curry Wurst Schranke”.
Unfortunately this can only be found in the Ruhrgebiet or Cologne.
Even though I found one place in London which does a decent one.
Pitfalls of Business Travel 