My parents had a friend called Karla.
A dear old German lady with impeccable manners and full of loving kindness who flirted uproariously with my father and swore in a bad English accent. She had been a midwife in the East End (of London) working with the Jewish community right after the second World War - it can't have been easy but it made for a great sense of humour!
I spent many an evening eating wonderful food at her home and many a Christmas lunch time persuading her to eat "just a little more!"
This is her recipe - perfect if you have a glut of courgettes!
Puree the soup and serve hot garnished with thin slices of courgettes.