15 Cake

The 15 Cake is a classic Northern Irish no-bake traybake, often called a "fifteen" because many traditional recipes call for fifteen of each key ingredient. Its exact origin is unclear, but it gained popularity in home baking and local cafes in the 1970s and 80s as a simple, crowd-pleasing sweet treat. The core ingredients typically include fifteen digestive biscuits, fifteen marshmallows, fifteen glacé cherries, a can of sweetened condensed milk, and desiccated coconut. The biscuits are broken into pieces, then folded with the marshmallows and cherries into the condensed milk. The mixture is pressed into a tray, topped with coconut, and chilled until firm.

A great version distinguishes itself by texture: the marshmallows should remain slightly chewy, the biscuit pieces add a satisfying crunch without turning soggy, and the overall sweetness is balanced, never cloying. The coconut topping should be toasted for extra depth. Regional variations are minimal, though some bakers substitute shortbread for digestives or add chocolate chips and cocoa powder for a darker twist. In Belfast, the 15 Cake is particularly celebrated; **The Pocket** café has been noted by the food guide *Only Scrans* as a standout spot for this dessert, serving a version that honors the traditional formula while using high-quality ingredients. Beyond Northern Ireland, similar no-bake biscuit cakes appear under different names, but the 15 Cake remains a beloved emblem of Ulster baking.