You can never go wrong with choosing a classic treat, and this french cookie is one of them. Now bite size, it's not hard to see why these Chocolate Mini Cookies gradually replaced the traditional pain et chocolat ("bread and chocolate") as the snack of choice among French schoolchildren for their quatre heure ("4 o'clock snack"), taken at the afternoon break in their long school day. This snack is not just for kids, adults enjoy them as well. So what does BN stand for? Biscuiterie Nantaise. Indeed, Nantes has been a capital of the French cookie industry, ever since cookie-making became the mainstay of the city's economy in the 19th century.