Thanks for your reply!
Hmm, I didn't, but I'll look for it next time I go shopping, and if I can't find it, well, I guess I'll just try a little bit of grated potato, like you said. I'll include agedama next time as well. Hopefully it'll taste even better! =D
I couldn't find any "real" okonomiyaki sauce either, so I kinda made my own okonomiyaki sauce from different recipes I found online. I don't think it tastes anything like the real deal, but I still liked it! It was something like this:
4 tablespoons of ketchup
1 tablespoon of worcestershire sauce
2 tablespoons of sake (Gekkeikan)
1-2 teaspoons of soy sauce
brown sugar (can't remember how much I used)
a little bit of honey
about 1 teaspoon of mirin
I think that's it...
oh, and I also put some "vårlök" (I think they're called scallions in english) on top of the okonomiyaki. I heard that you're supposed to use konegi, but I don't know if it's the same or not.. they kinda look the same, at least!