Green’s Dictionary of Slang

cocoa n.1

[the colour]

1. (US) a derog. term for a black person, esp. light-skinned.

[UK]K. Lette Foetal Attraction (1994) 203: Maybe I’ll have a black man. Never done that before. Yes, it’s time I opted for a bit of cocoa.

2. (N.Z. prison) a member of the King Cobra gang.

[NZ]D. Looser Boobslang [U. Canterbury D.Phil. thesis] 45/1: cocoa n. a derogatory term for a King Cobra gang-member.

SE in slang uses

In compounds

cocoa press (n.)

newspapers, e.g. The Daily News, owned by the chocolate-making Cadbury family.

[Aus]Bulletin (Sydney) 18 Jul. 36/3: The ‘cocoa press’ of England, controlled in the Radical-Wowser interest by Cadbury, who makes chocolate creams in the intervals between addressing Christian Endeavor conferences and peaching the Quaker doctrine of non-resistance, has made a bid for top place in the newspaper world.
cocoa shunter (n.) [the link of anything ‘chocolate’/chocolate adj. (2) to sodomy/the anus]

a male homosexual.

C. Morris Brass Eye Episode 6 ‘Moral Decline’ 5 Mar. 🌐 He’s taken up enough of this show already and he hasn’t even opened his mouth, god knows why he’s here, I’ve nothing to ask the guy, and er for all I know he may well be a bit of a cocoa shunter too.