Papaya Editing Papaya is a very common snack in Hong Kong in the 1940s and 1950s, and it can be bought in the big car stalls on the street. The sour papaya in old Hong Kong is preserved with white vinegar and sugar. If it is sold for two days, it will be thrown away. Keep the fresh and sweet taste of vegetables. In addition to sour papaya, there are buckwheat, mustard, radish, cucumber, lotus root, broccoli, pear and mango, and radish that eats mustard. ...