Bêtises de Cambrai are a French boiled sweet made in the town of Cambrai. "Bêtise" is French for "nonsense" or "stupid mistake" and the sweets are said to have been invented by accident. Two confectioners claim to be the original inventors: Afchain and Despinoy.
The original flavor is mint, but many others are now produced. Stripes of caramel (made from sugar and glucose syrup) are added to sweeten the taste of the mint.