Cacao Island

Cocoa Island is one of 34 island surrounding Whole Cake Island and part of the Big Mom Pirates territory also known as "Totland".

Cocoa is the fourth island visited by the Straw Hats in the New World.

Chocolatown
Chocolatown has houses made out of chocolate.

Past
At some point in the past, Cocoa Island became part of the Big Mom Pirates territory also known as "Totland"

Whole Cake Island Arc
The Sanji retrieval team docked on Cocoa Island for supplies on their way to Whole Cake Island. While there they met Charlotte Purin.

Trivia

 * Cocoa Island has houses made out of eatable chocolate similar to the house mentioned in Brothers Grimm's story Hansel and Gretel, coincide with the Big Mom Pirates fairy tale theme.