By Andrey Sychev and Mateusz Dobrzyniewski -Sales from the world’s biggest chocolate-maker Barry Callebaut rose slightly in the three months to the end of November, as the company managed to pass on some of the impact of a surge in cocoa prices. The company, which supplies chocolate for the Magnum ice creams made by Unilever and for Nestle’s KitKat bars, said sales volumes increased by 0.4% to 580,876 tonnes versus the 578,300 tonnes estimated in the company-provided median consensus. The Q1 rise compares with 579,000 tonnes in the same period a year ago, when a salmonella outbreak at its bigg…