There are several kinds of pralines. They can be sugar-coated caramelized almonds, hazelnuts or peanuts named after the 17th-century Maréchal de Plessis-Praslin, governor of the citadel of Blaye on the Gironde estuary, after they were invented by his chef Clément Jaluzot (the aristos always took all the credit!). They are now sold around the Gironde as the pralines de Blaye.
In the 19th century, a new kind of praline was developed in Montargis in the Centre-Val de Loire using caramelized sugar. Later these were made with dyed sugar to become pralines roses, a speciality of Lyon (in Belgium these are called chouchous).
Pralines roses are often crunched up as an ingredient in a dessert such as the gâteau de Saint-Genix or in Lyon’s tarte aux pralines (mixed with crème fraîche in a pastry shell) or in a praluline, a praline-filled brioche.
Images by bbte, Ji-Elle.CC BY-SA 4.0, PD