The Tunnock's Teacake is a sweet food often served with a cup of tea or coffee. It was developed by Sir Boyd Tunnock in 1956. The product consists of a small round shortbread biscuit covered with a dome of Italian meringue, a whipped egg white concoction similar to marshmallow, although somewhat lighter in texture. This is then encased in a thin layer of milk or dark chocolate and wrapped in a red and silver foil paper for the more popular milk chocolate variety, with blue, black, and gold wrapping for the dark. Retired RAF bomber pilot Tony Cunnane told of how Tunnock's Teacakes became a favourite ration snack of the V bomber nuclear deterrent flight crews based at RAF Gaydon, especially after discovering that they expanded at high altitude. This ended after one was left unwrapped and exploded on the instrument panel. Caramel wafers The Tunnock's Caramel Wafer, officially the Tunnock's Milk Chocolate Coated Caramel Wafer Biscuit, is a bar consisting of five layers of wafer, separated by four layers of caramel. The bar is coated in chocolate, made from cocoa and milk solids. The wafers are wrapped in red and gold coloured foil. Dark chocolate wafers, wrapped blue and gold, are also available. The University of St Andrews has a Tunnock's Caramel Wafer Appreciation Society, founded in 1982. In 2022, Tunnock's were the pitch sponsor at Uddingston Rugby Club, turning their padded posts into wrapped Caramel Wafer bars. Other products The other products in Tunnock's lines are largely based on the core products. The Caramel Log is similar to the Caramel Wafer, but with the addition of roasted coconut to the outside of the bar. Wafer Creams and Florida Orange have chocolate and orange flavoured cream in place of the caramel. A Snowball is similar to the Tea Cake, with the addition of grated coconut to the exterior of a soft chocolate shell but with no biscuit base. Despite pressure to do so, Tunnock's does not make any own brand biscuits for supermarkets. In 2013, Tunnocks's entered into an agreement with Tesco to sell a range of branded items produced by Glasgow-based promotional materials firm Orb. Fergus Loudon, sales manager for Tunnock's stated: "As well as teacake tea towels, aprons and china mugs, there will be the ideal gift for the many caramel wafer fans – a ‘yard of caramel wafers’." As of 2015, the products continue to be