Take half of the water and mix with the malt (or sugar) and salt. Stir to dissolve.
In a separate bowl, dissolve the yeast in the remaining water.
Fold the flour into the yeasted water, then add the salted water and mix until a nice soft dough comes together.
Knead for 5 minutes until you have a smooth elastic dough. Place on an oiled tray and brush the dough with oil. Leave to rest in a warm place for 1 hour.
After one hour, flatten the dough using the tips of your fingers. Push the dough out to fit the tray. Lift the dough and make sure there is still oil underneath the dough as it may have absorbed it during the resting time. Sprinkle with flaky sea salt and leave to rest for another 30 minutes.
Preheat the oven to 200°C/gas mark 6.
Use your fingertips to create irregular dimples in the dough, drizzle with more extra virgin olive oil and chopped rosemary (if using). Sprinkle with a little water (use a spray bottle if you have one) and then bake for 15-20 minutes or until golden.
Remove from the tray and leave to cool on a wire rack (or eat warm straight away).
