What specific flour is exclusively used for true Breton galettes?

Answer

Buckwheat flour (sarrasin or blé noir)

True Breton galettes, which serve as the savory centerpiece of a traditional crêperie meal, are strictly made using buckwheat flour, known locally as sarrasin or blé noir. This requirement stems from the region's agricultural history; buckwheat grew successfully in the soil composition where wheat cultivation was historically more difficult. Furthermore, because buckwheat is naturally gluten-free, the galette holds a distinct culinary status compared to dishes made with standard wheat flour, even though modern establishments might sometimes substitute batter upon request.

What specific flour is exclusively used for true Breton galettes?
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