Maltesers, billed as the “lighter way to enjoy chocolate”, have become another treat to shrink in size.In another chocolate tragedy it appears that Mars, which owns the Maltesers brand, reduced its pouch weight by 15 per cent. Mars said rising costs mean it had to make the unenviable decision between increasing its prices or reducing the weight of its Malteser packs. “Like all chocolate manufacturers, we have seen the cost of raw materials rise and, while we try to absorb these pressures as much as possible, sometimes we have to make the difficult decision to reduce the size of some of our products so our consumers can continue to enjoy an affordable treat,” the company said in a statement. Price of cocoa butter and other milk chocolate ingredients has jumped almost 40 per cent this year causing difficult decisions for chocolate manufacturers.