Worcestersauce is a flavouring used in manydishes, both cooked and uncooked, and particularlywithbeef. It is an importantingredient in a BloodyMary (vodka, tomato juiceandWorcester sauce).
They may be particularly wary of setting precedents that they may later regret: the beef war is widely seen as a forerunner for a larger battle about genetically modified crops.