Mix the yeast, sugar, water & olive oil in a small to medium sized bowl. Combine briefly with a fork. Set aside for ten minutes until the mixture becomes frothy.
Place the flour, 20g sea salt in the bowl of an electric mixer. Add
the wet yeast mixture. continue to mix for seven-eight minutes or until dough is smooth. If working by hand, the process will just take a little longer.
Place dough in a lightly oiled bowl, cover with a clean and slightly damp tea towel (or use cling film) and set aside in a draught free place to rise until doubled in size, approximately 1 hour.
Prepare a large baking tray (approx. 45 cm x 30 cm) with baking paper (or you can omit the baking paper). Place half of the additional 70 ml extra virgin olive oil on the tray and spread this out. Sprinkle the semolina on top.
Knock the dough back by giving it one punch, with your fist.
Drop the dough directly on to the baking tray.
Add half of the remaining oil and then commence gently pushing the focaccia to the corners and sides of the baking tray. The process is to shape your hands as though you are playing the piano. Then work your fingers gently to stretch the dough. You want to create little pockets for the oil to rest in with your fingers but avoid poking holes through the dough. When the dough stops pulling back, allow it to rest for 10 minutes. Don’t worry if you haven’t yet reached the corners of the tray with your dough.
Add your toppings (if using) and repeat the process again. Using your fingers to stretch and press the dough to the corners of the tray.
Cover with a clean tea towel and allow it to rest in a draught free place for 30 minutes.
Preheat the oven to 220oC.
Bake for approximately 30 minutes or until puffy and golden.
Allow to cool for 5-10 minutes and then remove it from the baking dish & on to a cooling rack. Warm focaccia is absolutely wonderful but if you allow the focaccia to cool to room temperature the end result & moistness of the bread will be at its best.