West African Lime Cake

This is a plain butter cake flavoured with lime juice and finished with chopped peanuts, presented in the source as West African. No country is named and the recipe carries no regional technique or ingredient beyond the lime and the peanut garnish. That is worth saying plainly. Limes grow across West Africa and are used constantly, and peanuts are one of the region's defining crops, so neither ingredient is out of place. But a creamed butter and sugar sponge baked in a square tin is a European baking format, and nothing in the method points to a specific West African tradition or dish name. Where the region's own baking is concerned there are named dishes with documented histories: Ghanaian sugar bread, Nigerian agege bread, chin chin, puff puff, kuli kuli. This is not one of them. It is a simple cake, it is very easy, and the source notes that children can make it with supervision, which is fair. It is left in the African collection because the ingredients point that way, with no country attributed and a flag for a decision.