Alain Ducasse with Adour DC Chef Julien Jouhannaud (left) and wine director Ramon Narvaez (right). (Josh Novikoff). France’s world-renowned Alain Ducasse was in town to re-launch the menu of his restaurant, Adour DC at the St. Regis. The hotel is now sans scaffolding, and the restaurant has made a few tweaks to make its menu more accessible. A handful of plates can now be ordered as half portions, including a deep red tuna tartare…