Remove and discard the course outer leaves of the cabbage. Cut away the
base and cut the heart and inner leaves crisscross into 1½" lengths.
In a bowl, mix the cornflour, water, vinegar, soy sauce, sugar and sherry.
Sauté the chili peppers in the oil in a large frying pan for 1 minute.
Discard the peppers. Add the cabbage and stirfry over a high heat for 3 minutes.
Add the salt and broth. Continue to stirfry for 5 minutes more over a medium
heat. Add the cornflour mixture. Mix well with the cabbage and stirfry gently
for 1 minute.