Crispy french fries

You the way to get the fries crunchy like what I buy food from restaurants networks.
1. We peeling and slicing potatoes
2. Keep 2 tablespoons of flour
3. Keep 2 tablespoons of baking powder Albekeanj
4. salt
We Bouklaitha well and then we Bkulaiha in new oil ..
And then they are offered a hot and crispy