Crumble the yeast into a mixing bowl or dough bowl.
Add water, salt, sugar, and oil and whisk with a hand whisk until the yeast is completely dissolved.
Add the flour little by little, until the dough is smooth and pliable.
Let the dough rise for 30 minutes under a shower cap or a tea towel.
Flatten the dough on a floured surface into a large square.
Fold the ends towards the center and press the folds together.
Roll the dough into a log (roll from top to bottom).
Place the dough with the seam side down in a baking form lined with parchment paper.
Let the bread rise for 30 minutes.
Score the bread and sprinkle it generously with flour so the crust becomes crisp and doesn't burn.
Bake for 10 minutes at 250 degrees Celsius (482 degrees Fahrenheit) with fan. Then reduce to 200 degrees Celsius (392 degrees Fahrenheit) with fan and bake for another 20 minutes.