If your mexican restaurant finds out that the most successful part of the business becomes making dessert (Mexican at first, but then onto other kinds of styles), then they would be happy to have picked someone who can actually cook something else than just Mexican food.
Or they could give said chef the recipe and ask them to make it - something like crème brûlée would not be easily made just following a recipe but requires culinary knowledge to complete it. A proper coding test/exercise will still be able to weed people out without having to put them on the spot with a whiteboard.
Or they could give said chef the recipe and ask them to make it - something like crème brûlée would not be easily made just following a recipe but requires culinary knowledge to complete it. A proper coding test/exercise will still be able to weed people out without having to put them on the spot with a whiteboard.