Thin-sliced beef marinated in a sweet soy-garlic sauce with grated Asian pear and onion - the pear's enzymes tenderize the meat, not just sweeten it - then quickly seared.
1.Partially freeze the beef for about 45 minutes to make it easier to slice thinly, then slice against the grain into 1/8-inch strips.
2.Whisk together the soy sauce, brown sugar, grated pear, grated onion, garlic, ginger, and sesame oil.
3.Marinate the beef in the mixture, covered, in the fridge for at least 1 hour, ideally overnight.
4.Cook the beef and green onions in a hot skillet or grill in batches until browned, about 2-3 minutes per side, then serve hot over rice, garnished with sesame seeds and extra green onion.