Preheat the oven to 350 degrees F.
Combine the butter, nori, wasabi, togarashi and garlic in a medium bowl and mix until fully incorporated.
Divide the potatoes evenly among 4 pieces of foil large enough to envelop the potatoes. Season the potatoes with salt and pepper. Place 3 heaping tablespoons of the seasoned butter on top of each packet. Fold over the foil and crimp all the edges to seal the packets.
Place the packets in the oven and cook until the potatoes are tender, 1 to 1 1/2 hours. To test for doneness, pierce a potato with a paring knife; if the knife slips in and out easily, the potatoes are done.
Open the packets very carefully and place all the potatoes into a large bowl. Pour any liquid left in the packets over the potatoes.
Serve as a side with any fish or meat, or eat as a snack!
Togarashi powder is widely available at Asian markets.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.
Recipe courtesy of Carlo Lamagna, Clyde Common, Portland, OR