LONDON, UNITED KINGDOM - FEBRUARY 06:  Camilla, Duchess of Cornwall tries a piece of New Zealand liquorice during a visit to the restaurant Caravan on February 6, 2015 in London, England. The Duchess of Cornwall joined celebrations to mark the 175th anniversary of the signing of the Treaty of Waitangi at a brunch showcasing New Zealand food and drinks. (Kirsty Wigglesworth - WPA Pool/Getty Images)