Here are some of the cool (yin) foods to that note of:
Bamboo shoot, banana, bitter gourd, clam, crab, grapefruit, lettuce, persimmon, salt, seaweed, star fruit, sugar cane, water chestnut, watermelon, lotus root, cucumber, barley, bean curd, chicken egg white, marjoram, oyster, pear, peppermint, radish, strawberry, tangerine, and yogurt, broccoli, cauliflower, zuccini, corn, tomatoes, pineapple, turmeric.