"Yum" is an informal expression used to indicate that food is delicious or appealing. It is often exclaimed when someone tastes something enjoyable, signaling pleasure and satisfaction. The term can be used in various contexts, from casual conversations to social media posts about meals. In addition to its use as an expression, "Yum" is also the name of a global company, Yum! Brands, which owns popular fast-food chains like Pizza Hut, Taco Bell, and KFC. The company focuses on providing tasty food options and has a significant presence in the fast-food industry worldwide.