Running a restaurant is hard. Long hours, tight margins and constant stress. In this episode of the Food Chain, Rumella Dasgupta travels to Edinburgh, Scotland, to meet Lisa He and her mum Sophie. Lisa has just put her life and acting career on hold, to try and help her mum save the family's restaurant, the China Star. A video she made documenting her attempt has gone viral, with more than fifteen million views. But is a viral video going to be enough to turn a failing business into a success? Lisa's got to fix the sprawling menu, digitise the paper ordering system and cut costs. Lisa and Rumella meet restaurant turnaround expert David Hopkins from the Fifteen Group in Canada, who's on hand to give advice and to explain why restaurants are such difficult businesses to run. Meanwhile the Mand family in Sydney Australia know only too well what Lisa and Sophie are going through. Last year, son Bhav documented his fight to save his dad's failing restaurant. So how's it doing now? And, in such a difficult industry, when is the right time to walk away? Rumella hears from Carleigh Bond, who made the tough decision to close her vegan fast-food restaurant Forked Up in October 2025.The Food Chain examines the business, science and cultural significance of food, and what it takes to put food on your plate. To hear more, search The Food Chain wherever you get your BBC podcasts.