heat the oil in a shallow frying pan over medium-low heat (or use a deep fryer if you have one)
cut the hot dogs in half (crosswise) and cut the block of mozzarella cheese (quartered)
assemble the skewer by putting the hot dog onto the skewer first, then add the cheese onto the skewer
by now, the dough should be doubled in size and sticky
coat the assembled skewer with the dough, you might need to use your fingers to wrap the dough around to hot dog to ensure it's fully covered
place the skewer into the cubed potatoes, then immediately into the panko breadcrumbs, you can use your hands to press the potatoes and breadcrumbs into the hot dog
fry for 3 minutes on each side
top with your desired amounts of sugar, ketchup, and mustard
enjoy!