The flavor of Juicy Fruit gum is a mystery, and the company has never revealed the exact flavoring formula for competitive reasons. However, the four fruit flavors in Juicy Fruit are apparently a combination of bananas, lemons, oranges, and pineapple. Some people also speculate that the flavor comes from jackfruit, a tropical Southeast Asian fruit with sweet, tangy, meaty notes, but there are no records of Wrigley ever importing the fruit or its juice. Instead of actual fruit or even fruit extracts, some chemists believe that the gum smells like jackfruit because they both contain a chemical called isoamyl acetate, which is a common ingredient in bubble gum, and some fruits produce it naturally as they ripen. In summary, the exact flavor of Juicy Fruit gum remains a mystery, but it is a combination of fruit flavors, including bananas, lemons, oranges, and pineapple.