- In a large pot, heat 3 inches of vegetable oil to 350°.
- Meanwhile, in a small bowl, mix the nori flakes with the shichimi togarashi, salt and pepper. In another small bowl, mix the mayonnaise with the sambal oelek and lime juice.
- Working in batches, fry the sweet potato sticks until they are tender and golden, about 7 minutes. Using a slotted spoon, transfer the sweet potato fries to paper towel–lined plates to drain.
- Generously sprinkle the hot fries with the nori-togarashi mixture and serve immediately with the spicy mayonnaise on the side.