On fries: (curry) ketchup, mayonaise and raw onion. That's what they call a "special", and it's good.
I'm not a fan of ketchup all by itself, but it's good with hamburgers, fried onion and soy bean sprouts.
I'm more of a fan of Mayo, as I can eat it with almost everything, even bami (blame Beyblade for that.... >_> It tastes quite good actually. Even though the English dub named it Mustard, it IS mayo).
Talking about Mustard, now that's something I'm not a fan of. Only with pieces of cheese with celery salt, now there I need mustard. XD
I also like tartare sauce on my fries. :3