Glossy, savory-sweet, and irresistibly fragrant, teriyaki beef is one of Japan's most beloved gifts to the dinner table. Thin slices of tender beef fillet soak up a rich marinade of mirin, light soy sauce, and brown sugar, all brightened with fresh ginger, garlic, and a nutty hit of sesame. Sweet baby corn cooks right alongside the beef, catching those caramelized edges, while the leftover marinade simmers down into a luscious sauce to drizzle over the top. A scattering of thinly sliced green onion adds a fresh, crisp finish.