Peel the potatoes and cut into 1.5 to 2 inch cubes.
Cook the potatoes in boiling water until they become fork tender, about 20 minutes.
Drain then add potato flour and salt. Mash and mix and work out any lumps. If the mixture is dry and grainy, add a tablespoon of water at a time. Mix until it becomes cohesive and reaches a smooth texture. It should retain its shape.
Divide into equal portions and form into 2-3 inch patties, roughly ¾ inch thick.
Heat half an inch of oil in a skillet over medium heat.
Carefully add the potato mochi patties and fry each side for 4-5 minutes until golden brown.
Remove and place on a wire rack to cool. Use a paper towel to soak up the excess oil. At this point, the potato mochi is extremely hot. Allow it to cool for 10-15 minutes before consuming.
MAKING THE GLAZE
Combine the GLAZE ingredients in a small saucepan.
Bring to a boil and reduce the heat to low. Simmer for 2-3 minutes until the sauce thickens.
Once the potato mochi is cool enough to handle, generously brush the glaze on both sides.
Wrap the potato mochi with a strip of nori and serve immediately.