Which of these food brand collaborations was NEVER officially released to the public?

In recent years, food brands have been creating buzz through unexpected collaborations, merging flavors and brand identities in creative ways. These partnerships often generate social media excitement, limited-edition products, and new customer demographics for both brands involved. Test your knowledge about some of the most notable food brand collaborations that have surprised and delighted consumers worldwide!

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Taco Bell x Doritos (Doritos Locos Tacos)
KFC x Cheetos (Cheetos Sandwich)
McDonald's x Heinz Ketchup (McHeinz Burger)
Pizza Hut x Cinnabon (Cinnabon Mini Rolls)