We love sweets potato fries...better than regular fries. I have no secret, but this is my method. I precook in microwave just about half the time required. Cool, peel, and cut into fries. It's bad, but I actually deep fry them, haha. So I let them fry for a bit, raise the basket and let rest a few minutes while the oil heats up again...then plunge and finish until edges are crisp. I've heard you can soak in sugar water for crispness, but this is quick and satisfies us.