In a mixing bowl, add the starter to the water, and stir it through with a spatula until dissolved.
Then, add the flour, then salt, and stir together until combined.
Next, cover tightly with plastic wrap and rest at room temperature for 30 minutes.
Slightly dampen your hands with water then transfer the dough onto your bench.). Stretch, fold, and turn the dough, to develop structure for 1-2 minutes.
Shape the dough into a tight ball and place it back in the mixing bowl. Cover with plastic wrap and leave to rest at room temperature for 2 hours (if it is a particularly cold day, it will need longer, ie: up to 3 hours).
Transfer the dough onto the bench and divide it into 4 equal portions of 250g, then shape these into tight balls.
Then, place the pizza dough balls into a tray or container which has an air-tight seal, allowing some space between them to grow in size.
Refrigerate overnight for a minimum of 12 hours or up to a full day.
Remove the dough from the fridge 1-2 hours before you are ready to start baking, keeping them completely covered so they don’t form a dry skin.
Dust each pizza dough ball with semolina. Then using a pastry scraper, carefully remove the dough and place it into a bowl with semolina flour.
Carefully, coat each side of the dough then using the flat part of your fingers, gently indent or press the centre to flatten it out without touching the edges. Flip it over and repeat on the other side.
Gently, transfer the dough to a pizza peel and continue to flatten, stretching it until it reaches the desired size.