30g/1oz toasted sesame seeds + 1tbsp to sprinkle over the loaf
1tbspnigella seeds + 1tsp to sprinkle over the loaf
Instructions
For the sponge
In a large mixing bowl, combine the strong white bread flour, cornmeal, yeast and warm water making sure there are no lumps (A Danish dough whisk is perfect for this job). Allow the mixture rest for an hour, or until it's foamy and full of bubbles
For the dough
Combine the remaining ingredients into the sponge and knead - by hand, mixer, food processor or bread machine - to form a soft, supple dough, adding a small amount of extra water or flour as needed
Place the dough in a greased bowl, and cover it with a proof cover or cling film. Allow it to rise for 1½ hours, or until almost doubled in size
Turn the dough out onto a lightly floured or greased work surface and divide the dough into 8 pieces. Round each piece into a ball, then shape each into a baton about 10cm/4-in in length
Grease or line with parchment, a 46 x 33cm / 18 x 13-in baking sheet
Place the ovals of dough side by side (long sides almost touching each other) on the sheet, leaving about 2½cm/1-in between each; they'll fill the pan end to end
Cover the baking sheet and allow the dough rise in a warm place for 1 hour, or until it's expanded enough so that the ovals are touching each other
Brush the top of the dough very lightly with water (or spray it gently), and sprinkle with a mixture of toasted sesame seeds and nigella seeds
Bake in a preheated oven at 190ºC/375°F/Gas mark for 25-30 minutes, until it's golden brown