Preheat oven to 205°C with a wire rack in the middle of the oven.

Sift the flours, baking soda and salt into a large bowl.

Mix the milk with the yogurt and pour it into the bowl. Stir all the ingredients until everything comes together in a dough. Turn onto a floured countertop and knead briefly until you get a cohesive ball.

Lightly flour a baking dish and place the ball of dough on the flour.

Brush all the surface with yogurt and sprinkle generously with flour and a good pinch of sea salt.

Make a cross incision across the top of the dough and bake for about 30 minutes, then quickly move the rack ond the bread up a level so the top of the bread gets brown and toasted.

Bake for about 20 minutes, until a hard crust forms.

Cool on a wire rack and enjoy with your favourite spread.