When the fruit is slightly underripe, how can its pronounced tartness be effectively utilized in cooking?

Answer

As a substitute for lemon or lime to brighten a dish

The tartness of underripe star fruit offers a unique aromatic quality that makes it an effective acidic component, usable in place of lemon or lime juice, particularly with lighter fish preparations.

When the fruit is slightly underripe, how can its pronounced tartness be effectively utilized in cooking?
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