Crescia-Onion Flavoured Focaccia From Le Marche

• 15 1/2 baking shee cover
• 10 round pie (plate)
• 1 at a time
• 650 gr unbleached all-purpose flour
• 350 ml water
• 250 gr flour
• 140 ml olive oil
• 120 ml warm water
• 120 gr onions
• 16 gr yeast (dried)