Niku udon simply means meat udon, and it's one of the most popular bowls in Japanese noodle shops. Bouncy noodles sit in a light dashi broth, topped with thin slices of beef simmered until sweet and savoury.
Everything is pantry-led: dashi, soy sauce, mirin and a little sugar. Shaved beef from the freezer section of an Asian grocer (sold for hot pot) cooks in about a minute.
Add a soft-boiled egg or a sprinkle of shichimi togarashi if you like a little heat.