Preheat the oven to 400°F.
Spread the fries evenly on a baking sheet and bake for 15-20 minutes or until crisp, stirring halfway during cooking, or drop in preheated fryer for 6 minutes tossing occasionally.
While the fries are baking, mix the canola oil with the garlic and rosemary and 1/8 teaspoon of the kosher salt.
Remove the fries from the oven and transfer to a large bowl with the garlic, rosemary and oil mixture and season with the remaining kosher salt and ground pepper. Toss well with tongs until combined and serve immediately.