This dish is a vegetarian’s dream — full of unusual, interesting vegetables, and so tasty! Called ‘su hao’ in Vietnamese, kohlrabi is a strange-looking vegetable. Kohlrabi is actually a German word, ‘kohl’ meaning cabbage and ‘rabi’ meaning turnip. It is crunchy, succulent and dense, and tastes a bit like a water chestnut and cabbage combined. Before using your clay pot, remember to submerge it in cold water overnight. This will ensure that it doesn’t crack over high heat.