Chop green onions and grate daikon radish. Mix grated daikon with chili powder to make momiji oroshi.

Beat eggs with a pinch of salt and sugar, then strain through a sieve.

Heat salad oil on a hot plate and spread thinly. Pour half the egg mixture and cook into thin sheets. Repeat for two sheets, then slice into thin strips.

Clean the hot plate and heat more salad oil. Stir-fry beef until browned, then add seasoning ingredients and cook until the liquid evaporates.

Boil soba noodles according to package instructions, rinse under cold water, and drain well.

Mix soup base ingredients in a microwave-safe bowl and heat for 1 minute.

Spread salad oil on the hot plate, heat, and fry soba noodles until crispy.