I wrote White Castle customer service and requested a list of food they serve that contain HFCS for my own knowledge basically, but I thought I would share their response for anyone that might be interested.
Response:
Here is a list of items that contain high fructose corn syrup:
Traditional Bun
BBQ Pulled Pork
French Toast Sticks
A1 Thick and Hearty Steak Sauce
Fat-Free Honey Mustard
Smokey BBQ Sauce
Marinara Sauce
Mayonnaise
Tartar Sauce
Seafood Sauce
Strawberry Jam
Grape Jelly
Maple Syrup
Shakes (Chicago, Cincinnati, Minneapolis, Nashville)
Barq’s Red Cream Soda
Barq’s Root Beer
Cherry Coke
Classic Coke
Sprite
Fanta (all varieties)
Pibb Xtra
Powerade
Vault
Hi-C (all varieties)
Fanta Wild Cherry FCB
Coke Classic FCB