The Immortal Grandpa

Immortal Venerable Xavier Thorne fails tribulation, returns to mortal world. His grandson, River Thorne, runs a restaurant. Xavier tests River's character. Impressed, he uses immortal arts to improve soup and passes down cultivation. They conquer the national catering scene, making Thorne family's medicinal cuisine a National Intangible Cultural Heritage. Grandfather and grandson return to their old restaurant, rediscovering their original intention.