Mix the dried yeast into the warm water
Weigh the flour into a bowl with the salt and olive oil
Add the pre-ferment in walnut sized pieces
Pour in the water and yeast mix
Use your fingers to blend the dough together
Scrape the dough from the bowl onto your kitchen table
Knead the dough for 10 minutes
Return the dough to the bowl, cover with oiled cling film and leave in a warm place to prove for 2 hours. Fold the dough once approximately midway through the prove
Turn the dough onto your table and pre-shape it
Cover with cling film and leave to rest for 5 minutes on the worktop
Shape your dough into your desired loaf - round, bloomer or loaf tin
Place on an oiled baking sheet or in your loaf tin
Return to the warm place for final proving of ¾-1¼ hours