Turning Doritos into a taco shell was much harder than Taco Bell expected. The company reportedly spent two years and went through more than 40 prototypes trying to solve problems ranging from cracking shells to getting the signature Doritos seasoning to stick. The breakthrough came from developing a process that coated regular taco shells with seasoning instead of simply recreating a giant Dorito. The result became one of Taco Bell's biggest product launches, reaching $1 billion in sales within its early years. Watch the full video here: youtu.be/IxGxAX_Gs4o #tacobell #doritos #doritoslocostacos #business #fastfood