The Duchess of Duke Street S01 E01 A Present Sovereign

Wanting to become an excellent cook, outspoken and ambitious Louisa Leyton persuades Monsieur Alex, a French chef working in the London home of Lord Henry Norton, to take her on as an assistant. Resented by other kitchen staff, Louisa bonds with Mary–target of their frequent malice–forms a friendship with butler Gus Trotter, and fends off attentions of the aristocratic Charlie Tyrrell. When Lord Henry unexpectedly returns during Monsieur Alex's holiday, Louisa must cook for a group that includes the Prince of Wales.