If you happen to be boating in a barge along the Canal du Midi we recommend a pit stop at the wine bar / wine shop les Vignes de Bacchus in Trèbes, just east of Carcassonne. They have a good selection of producers, focused on the nearby appellations of Minervois and Corbières. The owner of the shop/bar is also a winemaker and makes, for example, a very decent Tempranillo (3.50 euro), an unusual grape in France! From April 1 to October 30 they are open every day from 9 in the morning to 2 at night (well, as long as there is someone still there…).