corn syrup in mayo?

[yendi]

So, I went to lunch with co-worker yesterday, and snagged his mayo packs for my cheeseburger. After eating it (sans bun, of course), I was flipping the mayo pack through my hands, and noticed that the ingredient list included "high-fructose corn syrup."

WTF?

Why the hell would mayo have that? And any idea how much could be in the mayo? I'm hoping it was minimal, but I'm just amazed. I know that the sugar in some jars of mayo isn't enough to affect blood sugar, but I know that corn syrup is a lot denser. And since I'd had a salad at lunch, I'd already used up my carbs for the day.