How can I make crispy french fries in the oven?
user
Why would you like to make french fries in the oven, rather than on a stove top?  What’s the benefit of baking them?  Do you want to do this because of the reduced air flow to the fries, or something else?  Do you want the crispy fries to stay crispy once you’ve taken them out of the oven?
assistant
It would be lovely if they stayed crispy.
user
To make them crispy we need them to go past the surface, the browning process, and then they will lose their crispness.  The browning process is what creates the crispy parts, it makes those parts look crunchier.  So if you want the fries to stay crispy, you would need to make sure that the browning process takes place as well as possible.  The better it is, the more crispy they will be.  However, it is very difficult to make fries have the best browning in the oven.  They are often a big hit when the fries are roasted over the gas, because the gas can reach high temperatures and allows the browning process to happen, whereas the low temperatures in the oven don’t allow for as much browning.
assistant
But how do I prepare the french fries for the oven?
user
You would need to make sure the french fries are dry, so they won’t soak up the oil.  You might want to put them in a drying oven, which is hotter than the standard oven but not as hot as a grill.  If you want them to have a crunchy texture, you might also want to make sure they are seasoned with flour.  You could also bake them in the oven, although you would be taking away from the crispiness.
assistant
But I want them to be in the oven.
user
You could place the french fries in a bowl and add oil, salt, and flour, if you don’t mind losing the crispness.
assistant
How can I make crispy french fries in the oven?
user
Why would you like to make french fries in the oven, rather than on a stove top?  What’s the benefit of baking them?  Do you want to do this because of the reduced air flow to the fries, or something else?  Do you want the crispy fries to stay crispy once you’ve taken them out of the oven?
assistant
It would be lovely if they stayed crispy.
user
To make them crispy we need them to go past the surface, the browning process, and then they will lose their crispness.  The browning process is what creates the crispy parts, it makes those parts look crunchier.  So if you want the fries to stay crispy, you would need to make sure that the browning process takes place as well as possible.  The better it is, the more crispy they will be.  However, it is very difficult to make fries have the best browning in the oven.  They are often a big hit when the fries are roasted over the gas, because the gas can reach high temperatures and allows the browning process to happen, whereas the low temperatures in the oven don’t allow for as much browning.
assistant
But how do I prepare the french fries for the oven?
user
You would need to make sure the french fries are dry, so they won’t soak up the oil.  You might want to put them in a drying oven, which is hotter than the standard oven but not as hot as a grill.  If you want them to have a crunchy texture, you might also want to make sure they are seasoned with flour.  You could also bake them in the oven, although you would be taking away from the crispiness.
assistant
But I want them to be in the oven.
user
Well, the recipe that uses this method is in this article.  The article also mentions many of the ideas for browning that I described earlier.  The article also states that you’ll likely have better results using the oven if the french fries are seasoned with flour, or otherwise protected from the hot air from the oven.  If you want them to be in the oven, you can try to season them with flour first, so that they are protected from the oven air.
assistant
How can I make crispy french fries in the oven?