The very chic-sounding potager garden is better known as the traditional kitchen garden. The Scots quaintly refer to it as "kailyaird " literally meaning a kale yard or cabbage patch located by the side of a croft or cottage.
It's often a structured garden but can be anything from a simple vegetable plot to an enclosed, fenced or walled area, and essentially separate from residential lawns or ornamental gardens.
Basically it's a garden full of edible and medicinal herbs, vegetables, fruit and flowers often planted in decorative designs of repetitive geometric patterns with the function of providing food in an aesthetically pleasing manner.
Historically, the potager came from the gardens of the French Renaissance during the last years of the 1400s and heavily influenced by the Italians with whom France had been warring. In turn the English adopted the French potager in the 17th century and sequentially many a Victorian walled kitchen garden provided a large variety of fresh produce as well as flowers for the inhabitants of the home.
Some formal designs use low box hedging to edge, gravel paths between and bricks to section the areas. Some have raised, some have flat beds or even sectioned circular or hexagonal planting spaces for easy working and picking.