* If yellow rock sugar is not available, use raw sugar instead.
** Chinese beef balls are available from Asian grocers and some supermarkets.
Combine the broth, cooking wine, chicken feet, shallots, ginger, dried shiitake mushrooms, rock sugar and kombu in a large saucepan with 2L water and set over moderate heat. Simmer for 1 hour, then strain through a fine sieve.
Pour into a second saucepan and simmer gently. Slice the beef very finely.
Place the simmering broth in the middle of the table and give each guest a selection of beef, beef balls, tofu, noodles, mushrooms, corn, pak coy and a sieve so that they can each cook their own meal. Serve with the condiments.