One of the most renowned chefs in the world, Ken Hom, visits the MKR Mansion, where Edinburgh couple Angela and James face the challenge of creating an impressive main course from Ken's mystery ingredient: whole salmon. The couple's love of the Far East and passion for Vietnamese cuisine leads them to produce a dish called salmon bun cha, in which the salmon is filleted, skinned and cooked in various ways. They end the meal with an orange tart with Vietnamese egg coffee. But will their efforts stand the test of the challenge?