Starfruit has distinctive ridges running down its sides (usually five, but can sometimes vary). In cross-section, the fruit resembles a star.
The entire fruit is edible, including the slightly waxy skin. The flesh is crunchy, firm, and extremely juicy. It does not contain fibers and has a texture similar in consistency to that of grapes. They may be used in cooking, and can be made into relishes, preserves, and juice drinks.
Like the grapefruit, starfruit is considered to be a potent inhibitor of some enzymes. Thus, the consumption of carambola or its juice in combination with certain medications can significantly increase their effective dosage within the body. Research into grapefruit juice has identified a number of common medications affected, including statins, which are commonly used to treat cardiovascular illness.