This place isn't big, but it does big business. A 30 minute wait for food on a Tuesday at 1:15 in the afternoon. This picture shows the entire restaurant and it's maximum seating capacity. I had a lamb sandwich on a delicious roll with roasted fennel. We snacked on little potato croquettes before our sandwiches were served. It's possible to order ahead and the main purpose of Gregoire is take-away. Give it a try, it's reasonably priced, fresh, and tasty.