The Three Layers:

• Base: A light, aerated circular Genoise sponge cake.

• Center: A disk of tangy, bittersweet orange jelly (originally flavored with Jaffa orange pulp).

• Topping: A crackly, thin coating of dark chocolate that snaps when bitten.

The “Cake or Biscuit” Legal Battle: Though found in the biscuit aisle, McVitie’s successfully fought a famous 1991 UK tax tribunal arguing they are legally cakes. In the UK, chocolate-covered biscuits are subject to standard VAT, while cakes are zero-rated. The deciding proof: stale biscuits go soft, but stale cakes go hard just like Jaffa Cakes do.

Flavor Profile: A sharp, zesty citrus punch balanced by rich, slightly bitter dark chocolate and sweet, soft sponge.

Dietary Info: Suitable for vegetarians. Contains wheat (gluten), egg, and milk/soya derivatives.