Wonder plant 4
Today is about a fruit which have interesting function.
It's Buddha's hand or Fingered Citron. It is a variant of citron
It is edible but in Vietnamese mostly use for display as it represents hand of Buddha. Buddhism considers as national religion in Vietnam

Buddha's hand, a variant of citron, is not only edible but also holds symbolic significance in Vietnamese culture as a representation of Buddha's hand. Its use for display highlights the reverence for Buddhism, the national religion of Vietnam.