En réalité in the 15th and 16th century Albi knowed a lucrative business with the processing and commercialization of a special plant, named pastel giving a characteristic pale blue.
This chemical processing was possible with a lucky water situation. To be active the water must be without calcium because the pastel’s pigment don’t like it and around Albi, Carcassonne and Toulouse the water is principally with clay.
En résumé this trade is the most prosperous period in the history of Albi.
The rich family built with the pastel’s money nice palaces in the town
bathroom corner room Pastel