Bixa orellana
Achiote (Bixa orellana) is a shrub or small tree originating from the tropical region of the Americas. North, Central, and South American natives originally used the seeds to make red body paint and lipstick, as well as a spice. For this reason, the achiote is sometimes called the lipstick tree.
The tree is best known as the source of annatto, a natural orange-red condiment (also called "achiote" or "bijol") obtained from the waxy arils that cover its seeds.
Sorry I don't know the real name of this fruit. Local Bengali name is ASCHOTI.
Is this it?
https://en.wikipedia.org/wiki/Bixa_orellana
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Bixa orellana
Achiote (Bixa orellana) is a shrub or small tree originating from the tropical region of the Americas. North, Central, and South American natives originally used the seeds to make red body paint and lipstick, as well as a spice. For this reason, the achiote is sometimes called the lipstick tree.
The tree is best known as the source of annatto, a natural orange-red condiment (also called "achiote" or "bijol") obtained from the waxy arils that cover its seeds.