Mix the flour, seeds and salt in a bowl. Add the yeast, sugar and water, knead into a soft, smooth dough using the dough hook on a food processor for approx. 5 mins. Cover and leave to rise for approx. 1½ hrs. until doubled in size.
On a lightly floured surface, flatten the dough, fold in to the middle all the way around, turn and shape into a smooth ball. Place the dough on a baking tray lined with baking paper, sprinkle with a little flour and flatten. Cover and leave to rise for a further 30 mins. Flatten the dough, slash the dough vertically and then horizontally every 2 cm using a dough scraper or knife.
Approx. 25 mins. in the centre of an oven preheated to 200°C. Remove from the oven, leave to cool on a cooling rack.