Stumbling drunkenly from sushi to ramen the other week I came across a buldalk restaurant! It's on taylor street between post and geary. If you're heading north on taylor (and let's hope you are because it's a one-way street) it'll be on your right side.
The restaurant sign says "Korean Restaurant" and "Fire Chicken" and then maybe something about soju, so I'm not quite sure which one is its name.
If you're not quite sure what buldalk is, here's a korea times article about it:
I'm not too sure this place uses the chung-yang pepper as even though the chicken was spicy (and I got the "super spicy chicken" as opposed to the just "spicy chicken"), it wasn't as spicy as I remember it being in some of the various hongdae establishments I'd visited.
But maybe my tolerance for spicy food has risen since then because the guy did come back over to our table to make sure that we hadn't accidentally ordered the "super spicy" instead of the "spicy" chicken.
Aside from that, the maekju was americanized in size (i.e. smaller mugs and pitchers) and there was no banchan although they gave us rice (which was a tad bit old) when we asked.
I don't remember much else of the menu, aside from being able to order buldalk with ddeok and a selection of tang-type dishes (we had odengtang). The acoustics in the place were really bad. The walls and high ceilings tended to amplify conversation volumes rather than mute them.
Not a place that would survive long in Seoul, but as SF's only buldalk restaurant I'll probably be back there when I'm in the mood for chicken and pain.