1. Take the skewers and stick them into the hot dogs very slowly. Once all the hot dogs have the skewers, place them into the fridge so that they remain cold.
2. In bowl, whisk together flour, sugar, salt, and baking powder until well blended.
3. In a separate bowl, mix together milk and egg. Make a well in the dry ingredients and mix everything together. When everything is well-combined, Pour batter into a tall and thin glass and place in fridge until ready for use.
4. Heat oil to 350°F in a pan
5. Remove hot dogs and batter from fridge. Dip the hot dogs into the batter until it coats. Coat the battered hot dog with panko and fry in the oil for 5 minutes, or until golden.
6. Lay on a baking sheet and sprinkle with sugar.