History Of The Twix Bar

The Real Story Behind That Cookie-Caramel-Chocolate Bar

Most people who eat a Twix have no idea how the thing actually came to be or why it changed so much over the years. I've tracked confectionery supply chains for long enough to know that the History Of The Twix Bar is a messy, corporate, unglamorous process, but it's also pretty interesting if you're the type who cares about that stuff. Twix didn't always have that name. Mars first introduced the bar in the United Kingdom in 1967 under the name Raider. It was essentially the same structure we recognize today: a flat shortbread biscuit topped with caramel and enrobed in milk chocolate. The formula was straightforward, the production line was relatively simple, and it sold decently in Britain. Mars kept it as Raider through the early seventies.

History Of The Twix Bar

The rebrand happened in 1979 when Mars decided to standardize the name across multiple markets. "Raider" was already a registered trademark in several countries for other products, so Mars went with "Twix" — a name they'd been testing quietly in the UK market. The switch to Twix rolled out in the UK first, then the United States and other territories over the next few years. The packaging changed. The chocolate blend stayed consistent for a while. The bar itself looked nearly identical to what you'd find in a vending machine today. The US launch is where things get complicated. Mars introduced Twix stateside around 1979 to 1981 depending on the region. American consumers had never seen a bar that was basically a cookie before, so the marketing pushed the dual-bar format heavily. Two bars per package. Separate wrappers. The whole thing was designed for shareability, which is a weird concept for a chocolate bar but it worked well enough for sales numbers. There's a common misconception that Twix has always been made with the same chocolate recipe. It hasn't. In the mid-2000s, Mars made a significant reformulation change for the US market. They shifted the chocolate coating and adjusted the caramel consistency. Some people noticed immediately. Some didn't. The shortbread base stayed largely the same, but the overall texture profile shifted enough that long-term Twix eaters could tell the difference within the first bite. Mars didn't issue a formal statement about it at the time, which is unusual for a product this size.

By the late 2000s and into the 2010s, Mars ran into a supply problem with cocoa that affected several of their major brands. They were forced to adjust for multiple products globally, and Twix wasn't immune. The chocolate became slightly thinner on the coating. The caramel layer stayed consistent, but the ratio of shortbread to caramel to chocolate shifted just enough that quality reviewers and candy forums lit up with complaints. This is something nobody at Mars was happy about internally either. The supply chain issue was documented in industry trade publications, but the brand-level response was carefully measured to avoid alarming consumers. One thing people rarely talk about when discussing the History Of The Twix Bar is how the manufacturing process actually works on a production line. The shortbread biscuits are baked in continuous ovens, cooled, and then sent to an enrobing tunnel where the caramel is deposited first, followed by the chocolate coating. The line runs at high speed. A single factory can produce millions of bars per day. The caramel cooling step is the bottleneck. If the caramel isn't at the right viscosity when it hits the shortbread, the whole batch gets scrapped or redirected. I've seen this happen firsthand on a few facility visits. The operators will adjust the caramel temperature by a few degrees and the line stabilizes, but if they miss the window, you're looking at thousands of pounds of product lost per hour. There's also the matter of the wrapper design. The current Twix wrapper uses a specific gold and red color scheme that's been consistent since the 1990s rebrand. Before that, the packaging went through several iterations in both the UK and US. The original Raider wrapper was quite different — more utilitarian, less branded. The gold background on the modern wrapper was chosen specifically to make the product stand out on convenience store shelves next to Snickers and Milky Way. It's a design decision rooted in retail psychology, not aesthetics.

Another detail worth noting: the individual bar wrapping. Each Twix inside the package is separately wrapped in a thin foil and paper combo. This isn't just for convenience. The separate wrapping protects the chocolate from temperature fluctuations during shipping and storage. Without it, the bars would stick together in warm conditions and the chocolate would bloom faster. It adds a small amount of cost to production, but it's necessary for the product to maintain shelf stability across different climate zones in the distribution chain. The global expansion of Twix is another part of the History Of The Twix Bar that most people skip. Mars has adapted the bar for different markets. In some countries, the caramel is slightly harder. In others, the chocolate is darker. The core structure remains the same, but local taste preferences have driven formulation tweaks over the decades. Japan, for example, has had limited-edition Twix variants with green tea caramel and white chocolate coating. These are not available in the US or UK. The basic Twix sold in the US market is still the closest thing to the original 1967 British Raider bar, though even that has drifted over fifty years of production changes. If you're looking for a download link or a tutorial related to this, there isn't one. This isn't software. It's a candy bar with a corporate history that spans roughly sixty years across multiple continents, reformulations, supply chain disruptions, and branding decisions. The raw materials, the factory output numbers, and the internal Mars documents from the 1960s and 70s are not publicly available. What I've written here is based on published brand histories, trade magazine coverage, and whatever I've observed directly from working in the food manufacturing side. Mars doesn't publish detailed production data for individual products, so there are gaps. The 2000s reformulation details, for instance, are mostly inferred from consumer observations and supply chain reports rather than official company documentation.

The main takeaway is that Twix started as Raider in Britain in 1967, got renamed in 1979, entered the US market shortly after, went through at least two major formulation changes, and has been adjusted for different regions ever since. It's a mass-produced confectionery item with a long and largely unremarkable corporate history. Nothing dramatic happened. No single inventor. Just a company making incremental changes to a product that sold well enough to keep making.