Steps

1. Peel the corn, leaving a thin layer of the husk intact.
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2. Dip the peeled corn in water, wrap it in plastic wrap, place on a heatproof dish, and microwave at 600W for 4 minutes.
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3. Cool the microwaved corn in cold water to stop the cooking, then carefully peel off the husk.
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4. Cut the peeled corn into 3-4 sections, stand them on a cutting board, and slice off the kernels. (If fresh corn is unavailable, you can use canned whole corn kernels in the same amount.)
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5. If the kernels from the sliced corn are clumped together, separate them with your fingertips.
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6. Peel 100g of yam.
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7. Place the peeled yam into a thick plastic bag and mash it with a rolling pin until it loses its shape. (This method allows you to mash the yam without getting your hands dirty.)
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8. Add 1 egg, 2 tbsp Potato Starch, and 1 tsp Dashi powder to the bag with the mashed yam. Close the bag and knead to combine.
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9. Add the separated corn kernels to the bag with the yam mixture. Close the bag and knead again. (This one-bag method allows you to mix all ingredients together, minimizing dishes.)
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10. Heat 10g of butter in a frying pan over medium heat until melted and spread evenly.
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11. Cut a corner off the bag containing the mixed batter and pipe it into a circle of approximately 20cm in diameter in the frying pan.
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12. Once the batter is in the pan, reduce heat to low, cover, and steam for about 5 minutes. (The fritter is done when small bubbles appear on the surface and it looks set. If it still seems too soft, continue cooking for a little longer.)
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13. If the bottom of the fritter is not browned enough, increase the heat to medium and continue to cook to achieve a golden-brown color.
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14. Once the bottom is golden brown, carefully slide the fritter onto a plate.
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15. Place the frying pan upside down over the fritter on the plate, then flip the plate and pan together to return the fritter to the frying pan.
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16. Use a spatula to reshape the fritter into a round form and cook the other side until golden brown.
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17. Once the second side is golden brown, turn off the heat and serve on a plate. (If you find it a bit bland, you can enjoy it with your favorite condiments like soy sauce or mentsuyu.)
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