Peel and boil the potatoes until cooked. Drain and place in a large bowl to cool down.
Mash the potatoes.
Add the spices, one by one Garlic powder, onion powder, rosemary, salt, nutritional yeast.
Mix with hands until all the seasonings is well incorporated.
Roll out a sheet of plastic wrap on a flat surface large enough for the ball of seasoned potatoes.
Place another plastic film on top. Using a rolling pin, flatten the ball until you get a smooth slab that is not too thick but thick enough to be cut into fries.
Heat up the oil until it reaches 370F.
Line a plate with 2 sheets of paper towels.
Using a metal slotted spoon or long metal tongs lift one fry at a time and fry for 1-2 minutes.
Place each fry on the paper towel to remove excess oil
Serve immediately!
If the fries sit for a while they will get soft. You can air fry them for another 10-15 minutes to get them crispy again without refrying them in oil.