These may include Ugni blanc, Roussanne, Bourboulenc, Picpoul, and Clairette. Since about 1998 Viognier is increasingly being used and is also appearing as a single varietal. Tavel AOC, produced in the special microclimate of the sillon rhodanien (the furrow of the Rhône) by some thirty producers including Château d'Aqueria, Domaine Maby, Domaine de la Mordorée, Domaine Pelaquier, is an elite rosé only, which has been referred to as 'the wine of kings". Fortified wines (vin doux naturel) are made in the Muscat de Beaumes-de-Venise AOC and Rasteau AOCs. Côtes du Rhône Côtes du Rhône AOC is an AOC that covers both the northern and southern sub-regions of Rhône. Typically it is only used if the wine does not qualify for an appellation that can command a higher price. Therefore, almost all Côtes du Rhône AOC is produced in southern Rhône, since the northern sub-region is covered by well-known appellations and also is much smaller in terms of total vineyard surface. This AOC is also used by the commercial blenders (négociants) who buy grapes in bulk from various parts of the region to bottle, distribute, and export on an industrial scale. This nevertheless makes it the most commonly known, produced, and distributed appellation of the region. Produce from vineyards surrounding certain villages including Cairanne and others may be labeled Côtes-du-Rhône Villages AOC. Red Côtes du Rhône is usually dominated by Grenache. Other appellations Other appellations falling outside the main Rhône area in terms of wine styles but administratively within it are Clairette de Die AOC, Crémant de Die AOC, Grignan-Les Adhemar AOC, Luberon AOC, Ventoux AOC, Côtes du Vivarais AOC. These are more similar to the wines of Provence. In 2004 ten new appellations were officially added to the Rhône region, 9 in the Gard and one in the Vaucluse, which largely parallel the wines of Southern Rhône proper, while two appellations were discontinued for reasons of reforesting and urban encroachment. In 2004, Costières de Nîmes AOC, which previously had been counted as part of eastern Languedoc, was also attached to the Rhône wine region. In that year, INAO moved the responsibility for oversight of this appellation's wine to the regional committee of the Rhône valley. Local producers of Côtes du Rhône-styled wines made from Syrah and Grenache lobbied for this change since the local winemaking traditions did not coincide with administrative borders, and presumably due to the greater prestige of