The original Pillsbury Tunnel of Fudge Bundt cake, which became famous after the 1966 Bake-Off, relied on a now-discontinued key ingredient: Pillsbury's Double Dutch Fudge Buttercream Frosting Mix. This powdered mix was discontinued in the mid-1980s.

Key Details on the Discontinued Item:

The "Secret Ingredient": The Pillsbury Double Dutch Fudge Buttercream Frosting Mix was essential for creating the signature gooey, liquid-fudge center.

Why it was Discontinued: The rise of ready-to-use canned frosting drove powdered frosting mixes off the market.

Impact: Without the specific emulsifiers and starch in the original mix, the authentic, liquid-center texture is difficult to replicate.