Popcorn brand Butterkist will host ‘The Butterkist Popcorn Emporium’ in London, offering delicious treats to celebrate the exciting release of blockbuster musical-turned-film Wicked. This immersive emporium adds a twist to Butterkist’s signature snacks, sampling innovative new flavours. The shop is painted in a vibrant green inspired by the distinctive glow of the Emerald City to immerse guests in the Wicked universe. Inside the pop-up visitors will be able to customise their own popcorn ‘cocktail’…