Dwich & Co is a restaurant brand primarily known for its sandwiches, with a focus on quality, homemade recipes served in fresh bread. It appears to be a popular spot for quick meals, offering a variety of sandwiches (referred to as "Dwichs"), burgers, and salads. The original location is in Arras, France, where it is recognized for fresh ingredients and innovative sandwich options, including some American and street-food influences. They emphasize homemade preparations and have received positive customer feedback for product quality and service. Another branch exists in Martignas-sur-Jalle, France, with similar offerings.

In summary, "Dwich & Co" refers to this sandwich and casual food restaurant concept known for quality sandwiches and quick service in French cities. The second term "and co" broadly suggests "and company" and is often used in business names to imply a group or partnership. However, in this context, it is part of the restaurant's name "Dwich & Co." If you intended different meanings or contexts for "dwich" and "and co," please clarify. Otherwise, the above details describe the common and current usage related to the restaurant brand "Dwich & Co" in France.