Can you explain to me what a Soup kitchen is?
A soup kitchen is a place where hungry people can go to get food for free, or for a low price.
Do they serve primarily soup, or is there a wider variety?
Well, the name did originally come from soup kitchens that served soup and sometimes bread. That said, there are many varieties of soup kitchens and some serve various types of hot meals to patrons.
Where might one find such a soup kitchen?
Most soup kitches are located in lower-income neighborhoods. If you are looking for a soup kitchen, you may try reaching out to a local church to see if they have information about the local soup kitchens.
That is an excellent idea.  When did the soup kitchen originate?
The first soup kitchens were founded in the late 18th century.
Was the soup kitchen begun in the United States of America or in some other country?