What is a "meat-and-potatoes" guy

Hi there!

Is there anybody out there who can explain to me what is meant by the term "He´s a ´meat-and-potatoes´guy!
I Have to translate a text into German but without knowing what is meant by this term it is very dificult.
I would be pleased for any suggestion!!!

Meat and potatoes is typical, down-to-earth British food, so the guy will be a regular, no-nonsense, down-to-earth sort who doesn't go for exotic fancy things. ;-)

Thanks!!!!
You´ve helped me a lot!

You're welcome. ;-)