Question: why are jaffa cakes called cakes?
Answer: Jaffa Cakes are biscuit-sized cakes introduced by McVitie and Price in the UK in 1927 and named after Jaffa oranges. ... The product's classification as a cake or biscuit was part of a VAT tribunal in 1991, with the court finding in McVitie's favour that the Jaffa cake should be considered a cake for tax purposes.