Name The Year: Groucho, Chico and Harpo's final TV appearance together?

Questions

Tea: In this country, tea leaves are pickled and used as a vegetable relish?

Tea: The first sprouting of Darjeeling tea leaves in the spring are called this?

Tea: The practice of steeping tea was developed during this Chinese dynasty?

Tea: This black tea is flavoured with oil of bergamot, an aromatic Chinese orange?

Thanks to a dead cow. This topping is called 'minced meat' by some.?