Well, cold seems to be the clear favorite! That's kinda what I thought.
I always heat sauerkraut when I eat it with sausages, brats, etc, but have never put it on a hot dog.
I prefer plain yellow mustard, but will have deli mustard available, also.
Horseradish? Hmm, never thought of that, but I will definitely set it out (maybe try it, too!)
I use mustard and kraut on mine, but I also love the "Coney" (mustard, ketchup, onions and relish) and I think my favorite is a good "Chicago Dog" when I can find one. For brats, I like a good horseradish mustard and cooked onions, or I also like mustard and kraut.. I make a mustard, onion and beer sauce that I put on mine.
This is how I like mine, too - but I didn't know it had a name. I'm a Coney girl! LOL
COOKED onions - another good idea.
I have to say that the very best hot dog I have ever had (much to the chagrin of my brother Mike - a coney island guy all the way) is the completo in Santiago Chile.
Mostly, you need to be sure there is a healthy dose of veg, avacado (or guacamole) and you cannot skip the mayo...
Okay, you just lost me here - that is just WRONG!
Just kidding - sounds adventurous (which is right up your alley), but I think I'll skip
the mayo for my dogs!