Sable Breton – biscuit Breton is a crumbly, thick, and buttery French shortbread cookie, from the region of Brittany, which is located in northwestern France. They rely on high-quality butter and salt. The sandy texture is due to a high proportion of butter and egg yolks in them. Traditionally, almond flour is used not only to add flavor but also for the texture. Plus almond flour extends the shelf life of the cookie.