Keeping pure and true - Regulating halal food is creating headaches for the government

China's cities abound with restaurants and food stalls catering to Muslims as well as to the many other Chinese who relish the distinctive cuisines for which the country’s Muslims are renowned. So popular are kebabs cooked by Muslim Uighurs on the streets of Beijing that the city banned outdoor grills in 2014 in order to reduce smoke, which officials said was exacerbating the capital’s notorious smog (the air today is hardly less noxious).