Banana sounds really interesting. Maybe not as a catsup, but I'd bet mopping some on steaks or pork while grilling would be really good. I use Thai sweet chili sometimes.

There's a German deli across from Pike Market in Seattle that carries a curry ketchup. Tried it as a lark and it was great. I just make my own now with Hunts and add curry powder until it's right.

I haven't tried the pretzel rolls with a burger yet. Mostly ham sandwiches or just eating them plain. They're tasty as can be. Those fucking mad scientists at Costco. They're such a good Blue company.