Place your yeast, warm water, and oil in the bowl of your stand mixer, or a large mixing bowl. Allow to sit for 5-10 minutes.
Add your flours and salt to the yeast mixture, and using a dough hook (or a spatula), mix the ingredients until a dough forms, occasionally scraping any flour on the sides of the bowl. Using a dough hook or your hands - knead (stand mixer: medium speed) for 4 minutes until the dough is pliable.
Place in a lightly oiled bowl, cover with a cloth, and allow to rise for one hour.
Remove from the bowl, fold each side towards the middle to form a round, flip upside down, then place back in the bowl and rest for another hour.
Repeat the folding again, and then rise for a final time - for at least 2 hours (or in the refrigerator for up to 2 days - make sure to oil the top of your dough if you do this so that it doesn't harden, and cover the dough with plastic wrap.