What is mussels and chips in french language?

The most common and direct translation of "mussels and chips" in French is:

Moules-frites

This is a very well-known dish in France and is usually pronounced "moul-freet".

Here's how it breaks down:

* Moules: Mussels

* Frites: French fries

You might also see "moules frites" written as "moules-frites" with a hyphen, but both are correct.