List of things basic understanding

Hello! I am designing a dashboard for restaurants. I have Restaurants and Dishes data types created, where Restaurants have the Dishes element as a List of dishes. Every restaurant have different dishes, so inside the Restaurant page I can go to the ´Create new dish´page. That would create a new dish for that specific restaurant. That dish is not available for any other restaurant. How could I do it? When I enter the Workflow, I can select Dishes type, so it´s not binded to the specific restaurant.