Gather ingredients. Bring salted water in stock pot to a boil.
Peel the waxy outer layer and the secondary white, fibrous layer of the yuca root.
Cut yuca into steak fry size sticks; roughly 1 1/2 inches by 3 inches.
Add yuca fries to salted, boiling water and cook for 15-20 minutes or until yuca is tender but not falling apart. Some outer layers may come off during this first
While yuca is cooking in boiling water, prepare the chimichurri sauce using the remaining 5 ingredients (use more or less chili flake based on your heat preference). Set aside.
Once yuca is tender, remove from water and drain on paper towels. Heat up oil to prepare yuca for frying. Ensure the yuca is dried very well to avoid oil splashes.
Add yuca fries to hot oil one at a time. Fry until golden, about 5-7 minutes. Remove immediately to paper towels to drain and sprinkle with Kosher salt.
Prepare presentation dish. Stack yuca or use a cup to serve yuca in. Sprinkle with chimichurri sauce and serve extra on the side for dipping. These can also be served plain.