Generally, vegetables are light. If you say cool vegetables, see the picture below: Except pumpkins and melons, other vegetables, such as bitter gourd, loofah, cucumber, cauliflower, watermelon and wax gourd, are cool vegetables. Tomato, eggplant, celery, chrysanthemum brain, okra (purple leaf), lettuce, asparagus, watercress, sweet potato, etc. It is also a cold vegetable.