Mix together your activated sourdough starter, lukewarm water and salt, mix together in a large bowl until combined

Add instant yeast and stir

Add the flour and mix with a wooden spoon or spatula until incorporated

Top with a little drizzle of olive oil and let it rest for 30 minutes with a towel over it loosely

Do 10-12 stretch and folds (look up a YouTube video if you are confused by this!)

Drizzle with a bit more olive oil to cover and cover again with a tea towel and place in a warm-ish place in your kitchen (if it's cold your dough will take a very long time to rise..) this could take 4-12 hours

It's ready when the dough has fully doubled in size and will look bubbly and light

Generously grease a cast iron pan and add 1-2 tbsp of olive oil to it

Oil your hands and deflate the dough and release it from the sides of the bowl

Move the dough into the center of the pool of oil in your prepared pan

Fold the dough envelope style from top to bottom and side to side to create a rough rectangle. Turn dough over so seam-side is down

Cover with olive oil and let rest in the same warm ish place for another 3-6 hours

Preheat oven to 425ºF

Coat hands with oil and using all fingers press into the dough to dimple until bubbles are evenly spread throughout the dough

Sprinkle generously with sea salt, I like to use Maldon. Or other toppings you love! Drizzle with a little more olive oil

Transfer cast iron to the oven and bake for about 25-30 minutes or until golden

Remove from oven and let Cool at least 15 minutes before slicing