Peru or Ecuador?

My "go to" chocolate preference is plain and dark. Tesco has own brand Finest offerings from Peru (85%) and Ecuador (75%) and milk chocolate from the Ivory Coast (48%). They are unusual in identifying the source of their cocoa. I carried out extensive research in the chocolate aisle of the store (yum) and no other brands did this. Lindt? No. Green&Blacks? Also No.

ChatGPT, in a style which I appreciate, is at its most cynical in saying why:

Because they don’t want you to think too hard about where it comes from.

Here’s the blunt truth:

Most big chocolate brands deliberately leave out the source country because transparency would expose uncomfortable facts about their supply chains — child labour, deforestation, and unfair pay being the main ones. The majority of the world’s cocoa (around 60–70%) comes from West Africa, mainly Ivory Coast and Ghana, where working conditions are often poor and traceability is patchy at best.

So shout out to Tesco, which displays the following information in their packaging:

We work with the Transparence Cacao programme and the Rainforest Alliance in Peru, Ecuador and Côte d'Ivoire to help ensure that every bar of Tesco Finest chocolate supports sustainable practices in the cocoa industry and contributes to the livelihoods of farming communities.

I couldn't find any evidence of any other major chocolate brands using Transparence Cacao, although they all make claims to sustainable practices. So why not tell us where your cocoa comes from?

I need to undertake a taste test. Will the winner be Peru or Ecuador?