Cao Shi. Cao Shi Duck Neck, established on 20 16, is a new catering management company specializing in the management of braised dishes and joining training. It owns two brands, namely "Cao Shi Duck Neck" and "Cao Commander", and is committed to becoming an influential new-type pot-stewed food business enterprise in China. Cao Shi is twice as spicy as turkey noodles. Many people who have eaten it say, "Cao Shi is the hottest thing I have ever eaten."