Papaya is a tropical fruit with a smooth, yellow skin and soft, sweet orange flesh that is milder tasting than a mango. Other shapes and colours of papaya are also grown. Halve a papaya lengthwise and scoop out shiny black seeds before peeling. In Thai cooking, young green papaya is used to make salad or Som Tam, a popular salad dish among foreigners in Thailand. You may be in difficulty in finding fresh green papaya outside Thailand. The fresh carrots or cabbages or green apples can be used as a substitute.