However, pecan pie just wouldn't have the massive appeal it does without one very special ingredient: Karo corn syrup. In ...

all baked up in a pie shell" (via Slate). Karo most likely wasn't the first to use corn syrup to make pecan pie, with ...

is a way to celebrate that harvest. But pecans alone don't make the pie. Pecan pie recipes began popping up in the early 20th ...