Put in a bowl flour, yeast and water.
Knead by hand or with a mixer.
After a couple of minutes add yeast, knead again for about 10 minutes, you must end with a smooth loaf.
Let it rest covered for about one hour or until it doubles.
Using a rollpin or a pasta maker spread your dough very thin, use some flour if it sticks.
You can make a single big spread then cut it in irregoular shapes or spread single small pieces.
Grease a baking tray with olive oil ( do not use baking sheets for this recipe!), put streghe on the tray, pin them with a fork to avoid bubbles then brush them with some tomato paste mixed with olive oil ( and a pinch of salt if needed).
Sprinkle streghe with dry oreganon then bake in already hot oven at 430°F for about 8- 10 minutes.
Watch them closely because they can burn in seconds.