Tourisme derail. Please scroll by if you're not interested...
This is going out to
@Alice Strictknickers and
@billybudd , if you're interested - my food market recommendations.
I always direct visitors to Les Halles de Narbonne. It's open 365 days a year from 7am to 2pm. A must visit for any foodie. If it's edible you'll find it there. Thursday and Sunday are Narbonne market days and the alternative stalls (clothing, housewares and general crap etc.,) are spread out around the barques outside of Les Halles de Narbonne. Inside the Halles are bars and brasseries and they are very, very popular. Chez Bebelle is a local character, ex French rugby man if you can get a seat grab it. Just opposite the Halles he now has a restaurant. Narbonne is a roman town with lots of roman artifacts and a new museum. The cathedral and the Palais de Archevêques was the seat of the archbishops of Milan. Narbonne is not a huge town, pop. under 60k, but it has a good feel and a Mediterranean vibe. The local sweet pastry is La Narbonnaise.
Moving out to the coast from Narbonne is Gruissan. This was the opening to the roman port but there is not much evidence of that now. The old village is built in the circulade, between etang and sea. They fish eels in the short autumn season from the etang and tielles (little cockle/scallops) from the sea in the spring and there is a small fish market, open daily, on the fisherman's quay. There is also a fisherman's "village" where you can buy direct early mornings. On the way to the fisherman's village is the salins, salt pans, where you can take a guided visit, visit the museum and buy sea salt direct. There is a restaurant too. Oysters are farmed at Gruissan too and the farm shop and restaurant is La Pearle Gruissanaise at Narbonne plage. There is also a micro brewery at Gruissan plage. Gruissan plage is probably best known by the French for the cult film 37,2° Le Matin by Jean-Jacques Beineix. It's stilt houses are iconic. There is also a port plaisance at Gruissan with bars and restaurants. Between Narbonne and Gruissan is an area called La Clape. There are excellent wine domaines growing their vines on the limestone escarpment.
I know you said you've been to Carcassonne but the market in the centre of the Bastide town, place Carnot (gorgeous marble fountain dedicated to neptune and lots of bars too) is well worth a visit. Tuesday, Thursday and Saturday morning. Then just a few steps from there is the covered food Halles. Turn left at the top rh of place Carnot passing Fromagerie Bousquet, absolutely excellent, then right into rue de Verdun. In front of you on one corner is La Ferme, a gourmande experience of a shop, and on the other corner a very good boulangerie. Continue a few steps along rue de Verdun and the entrance to the covered Halles is on your left. If you have never walked around Carcassonne new town, the Bastide St Louis (13thC so not new at all), it's well worth it. Lots of places to eat in hidden side streets. Cassoulet, of course is the dish of Carcassonne and lots of duck.
My last, but not least, market choice would be Revel. Not strictly in the Languedoc but what's a border between friends! Between Toulouse and Castelnaudary in the heart of haricot bean and Saucisse de Toulouse country. Cassoulet prevails and hearty stews in winter. Head in to the centre of the old town and you'll find the market square. Saturday morning only. Lots of small, local producers. Gorgeous succulent and vibrant fresh fruit and vegetables and livestock still on the hoof, if you get my drift.
So, there you are. In the words of Julia Child's - Bon appetit!
Apologies for the derail to those not interested...