Tiffin is a form of cake-like confection composed of crushed biscuits (most commonly digestive biscuits), sugar, syrup, raisins, cherries and cocoa powder, often covered with a layer of melted chocolate. unlike regular cakes, tiffin does not require baking. instead, following preparation of the mixture, the confection is chilled until set. as a consequence the product may also be known as "fridge cake" or another similar term. it was invented in the early 1900s in troon, scotland. the confectioner cadbury produces a chocolate bar called tiffin, consisting of biscuit pieces and raisins in chocolate, as part of its dairy milk range.

Source: Wikipedia