Two important changes happened in the 19th century that changed the fortunes of the Armagnaçaise for the better. The first was the introduction of the continuous still which is essential for extracting armagnac’s particular qualities. The cognac stills used previously were unsuitable for wines from the sandy and clay soils around much of the region. They were also too expensive for the peasants, who needed a simpler and more easily transportable still which could be easily moved from farmhouse to farmhouse, and which used cheaper fuel. They became quickly interested in the continuous still, invented by Edouard Adam from Montpellier. The idea was taken up by Antoine de Melet, Marquis de Bonas, a landowner famous for new ideas. By 1819 a factory in Eaux was making the new still, which was perfected by a peasant called Verdier who gave his name to the final apparatus. Unlike all the other types of continuous stills, the Verdier model retained more of the essential elements in the wines than did the orthodox pot-stills. The brandies from this still developed in time to a more complex spirit than cognac, albeit at the expense of some initial roughness and woodiness.
The second change was the development in the 1830’s of the river Baise to a canal providing economical transport from the heart of the Tenareze region to Bordeaux, a world centre for trade in wines and spirits which allowed the Armagnaçaise a way to sell their special brandies. By then, unfortunately, the Cognaçaise had a 150 year lead. Nevertheless, the 50 years after the canal was built witnessed the first real breakthrough to the world markets. Some of the most famous names were founded around this time. The first, Castarède, which had previously been at Lavadac moved with other merchants to Condom nearer the centre of the region. The boom was real enough; in 1804 the Gers produced 50,000 hectolitres of pure alcohol, a figure which had doubled by 1872 from 100,000 hectares of vines.