Wikipedia
Saint-Julien-de-Concelles is a commune in the Loire-Atlantique department in western France.
Saint-Julien-de-Concelles is the home of the popular beurre blanc sauce. The sauce was first discovered in a small restaurant on the banks of the river Loire. The town is also one of France's main growers of the mâche (lambs lettuce). Its flat and sandy land provides good terrain for growing vegetables, such as leeks, and some flowers. Saint-Julien-de-Concelles also grows the grapes on its hills that produce local Muscadet wine.
A very large lake known as the Plan d'Eau du Chêne is located near to the center of Saint-Julien-de-Concelles. The lake offers sailing, fishing, various sports and beautiful scenery for walking, which attracts nature lovers.
http://www.st-julien-de-concelles.fr/index.html