Which clear food product, launched in 1993 by Kraft Foods as part of the 'clear product' trend, was discontinued within months due to poor sales and consumer rejection?

The food industry has seen many innovative products come and go, but some failures are more spectacular than others. In the early 1990s, riding on the clear product trend, a major food company attempted to revolutionize a beloved staple but instead created one of the most notorious product failures in food retail history. Test your knowledge about this transparent attempt at innovation!

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Crystal Tab (clear cola)
Crystal Gravy (transparent brown gravy)
Clear Ketchup (transparent tomato ketchup)
Invisible Cheese (transparent processed cheese)