This is what the website says:-
Allowed Vegetables - 200g cooked/consumed Weight
Asparagus, Bamboo Shoots (canned, drained), Broccoli, Cauliflower, Celery, Courgettes, Cucumber, Fennel, Gherkins, Green Peppers, Green Chili Peppers, Leeks, Lettuce, Mushrooms (not fried), Olives, Rocket Salad...