Mix yeast, sugar, and warm water in a small bowl. Let it sit for 5 minutes until foamy.
In a big bowl, mix all-purpose flour, rice flour, and salt.
Pour the yeast mixture into the flour mix. Stir into a sticky dough. Cover and let rise for 1 hour until it doubles in size.
Put half a hot dog and one cheese stick on each skewer.
Wet your hands. Wrap dough around each skewer, sealing the hot dog and cheese completely.
Roll in diced potato or crushed cornflakes, then coat with panko breadcrumbs.
Heat oil in a deep pot to 350°F (175°C).
Fry corn dogs for 4–5 minutes until golden brown. Turn them to cook evenly. Drain on paper towels.
While warm, roll each in granulated sugar.
Drizzle with ketchup, mayo, and mustard in a zigzag design.