Preheat oven to 425 degrees Fahrenheit. Line a baking sheet with parchment paper and lightly flour.

In a bowl, mix together all-purpose flour, pastry flour, buckwheat flour, baking soda, and salt.

In a second bowl, whisk together buttermilk, egg, and honey.

Pour buttermilk mixture into flour mixture and stir with a wooden spoon until it comes together. If dough is dry, add a splash of buttermilk. If dough is too wet/sticky, add a little extra all-purpose flour.

Transfer to a flour-dusted surface and knead for 1 to 2 minutes.

Shape into a 7-inch round and place on the baking sheet. Make an “X” on top of the loaf about one-inch deep. Optional: sprinkle top with flakey sea salt.

Bake for 40 to 45 minutes until brown. Bread should sound hollow when you tap on it.

Allow to cool before eating