The Princess of Wales duelled her husband in a cocktail-making class while visiting Belfast yesterday The pair competed to make an Up the Lagan in a Bubble, an ode to the Northern Ireland city   Here, FEMAIL deconstructs Kate's masterclass, step by step, so you can see how a Princess makes a cocktail
View more: A royal cocktail masterclass! After Kate faced-off with Prince William behind the bar in Belfast, how to make a Princess-inspired beverage - complete with gin, garnish and a grin