Preparation: Cut the sweet potato into sticks and place them in a medium-sized bowl. Add enough water to cover the sweet potatoes and soak for 5 minutes. Drain and pat the sweet potatoes dry with a paper towel.
Pan-frying: Heat the oil in a frying pan over medium-high heat. Once the oil is hot, add the sweet potatoes and pan fry for 5 minutes or until golden brown and crispy. Transfer them to a plate lined with paper towels to remove excess oil.
Season: Serve the sweet potatoes on a plate. Sprinkle salt on top to your taste and serve with a dipping sauce of your choice.
Notes
The Japanese sweet potato skins are edible and contain valuable nutrients, just like other varieties of sweet potatoes. Therefore, I recommend consuming sweet potatoes with the skin on. However, if you do not enjoy the skin's texture, peel it off.
Soaking sweet potatoes can not only help to remove the bitterness but also help to prevent the color from changing.