How do you create ever-popular biscuit products? Well, start with excellent ingredients. Add layers of ownership by the same, caring family. Then cover with a generous sprinkling of attention to detail and personal service.This winning formula was initiated by Thomas Tunnock in 1890 and is still run as a family baker today. A delightful biscuit consisting of alternating layers of caramel and wafer biscuit, blanketed in milk chocolate.