Adolph Coors Co, the third biggest US brewer, is considering a joint venture with another company to market sprirts-based drinks and is also planning to reintroduce Zima, its flavoured malt drink, according to reports today. Speaking with financial analysts and institutional investors in New York and quoted by Reuters, the company said it will introduce new marketing for Zima, which has been a weak seller in recent years after a strong introduction. It did not provide details.