That priceless sensation that a hot cup of coffee guarantees on cold winter mornings — turns out, it’s only too real. Coffee has turned out to be the most priceless commodity over the past year. A historic drought in Brazil and a harvest-hurting fungus in central America crippled global supplies, driving up prices at all coffee chains. For futures traders, coffee consequently proved to be a better bet than bullion and crude, which were the worst performing commodities of the year.