Sesame Beef is a Chinese dish that consists of thin slices of beef, stir-fried with vegetables, and flavored with a sweet and savory sesame sauce. The beef is typically marinated beforehand and coated in cornstarch to give it a crispy outer layer. Sesame seeds are sprinkled on top to add a nutty flavor and crunchy texture. It's a delicious and satisfying meal that pairs well with rice or noodles.