Wash the potato and use a knife to score the skin of the potato around the mid-section.
Place the potato into a saucepan filled with water and bring to a boil. Reduce the heat to a simmer for ~45 minutes.
When a toothpick easily pierces the center of the potato, drain and place in a bowl of very cold water. Slide the skin off.
Cut the potato into a few pieces and press through a potato ricer (or use a potato masher) into a medium bowl.
Add the rice flour, starch, salt and pepper. Mix well and use clean hands to form the potato into a dough.
Shape the dough into a 1" wide snake and cut into 1 1/2" sections.
Press the tines of a fork into each section of potato to create a ridged pattern.
Heat the peanut oil to 325˚F/163˚C.
Gently drop a few potato pieces into the hot oil and fry 3-5 minutes. They shouldn't be golden at this point, just firmed up. Drain on a rack lined with paper towels.
Increase the oil temperature to 350˚F/177˚C and fry again for 30-60 seconds or until golden. Drain on a rack lined with paper towels. Sprinkle with salt and paprika. Serve hot with ketchup.