Place uncooked fries into a large bowl of cold water. Add the hot sauce and stir. Let soak for 10 minutes.
Heat oil in a deep fryer or Dutch oven to 375 F.
Place corn flour, corn meal and Cajun seasoning in a large resealable bag or container.
Drain the potatoes but do not pat dry. You want them damp. Add to the seasoning bag. Seal and shake to coat.
Fry potatoes (working in batches if needed) 7-10 minutes or until golden brown. Remove to a wire rack on a baking sheet or paper towel-lined plate and season with salt.