What type of flour was used to make the earliest, hearty savory crepes known as galettes in Brittany?

Answer

Buckwheat flour

The damp, rocky terrain of Brittany favored buckwheat cultivation, leading to the earliest iterations of the dish being savory galettes made from buckwheat flour and water.

What type of flour was used to make the earliest, hearty savory crepes known as galettes in Brittany?
ItalyOriginFrancecrepe