Lindt & Sprüngli booked strong first-half revenue growth this morning (20 August), driven by a category-beating sales performance in Europe and North America. The Swiss chocolate maker said it is gaining market share in the face of ongoing economic challenges and a constrained consumer environment. CEO Ernst Tanner spoke to Katy Askew about how the company is convincing consumers to trade up - and why he sees cause for optimism in developed markets for the remainder of the year.