Bouea macrophylla

The tree belongs to the family Anacardiaceae which also includes mango and cashew.

The unripe fruit (resembling a mango) are green in colour and mature to an orange/yellow, with the seed being pink.

The fruit range from sweet to sour in flavor similar to the Alphonso mango,[5] and have a light smell of turpentine.

When ripe, the fruit is soft and has fibrous mango-like seeds that have a noticeable purple color.

In 2015 a major retailer introduced the fruit to the British public under the name plango, apparently a portmanteau word for "plum" and "mango".

A young gandaria fruit in Java . Ripened ones are yellow-orange.
Gandaria leaf in Java
Jus gandaria , mango plum juice consumed in Indonesia
Ripe Bouea macrophylla or Buah Remia/Setar/Kundang sold in Malaysia