Gamjatang

감자탕  or neckbone soup as I know it.
However when I googled it, Wikipedia says it is 'pork bone soup'.  SO, I guess maybe it can be made with any type of pork bones?  Who knows.  All I know is it is good and if you like Korean food then you should try this.

A while back I wrote about this Bulgogi and Squid place.
The  Gamjatang place is RIGHT ACROSS THE STREET.
(In Hannam)

Take note:  The orange sign says 감자탕
Go in that alley.

When it dead ends take a left you will see this:

This is the restaurant.
Check out the menu, they even have it highlighted with red around what you need to order.
감자탕 = 6,000 won.

When you order 감자탕, you get this:
Neckbone soup - pork neck bone, vegetables, green onions, hot peppers (although this was not very spicy at all), potatoes and wild sesame seeds.  You will need to eat this with chopsticks and a spoon.  Chopsticks to pick the very tender meat out with, a spoon to eat the delicious broth.

The first time I went we ordered it in a larger size with noodles.  I liked this better, but I'm not sure how to order this.  I'm going to take the picture in next time to show them unless someone on here can tell me what it is.  Super and we added rice at the end when there was only a small amount of broth left to make it even more scrumptious. 

To drive here from post:
Exit Commissary gate - turn left
Stay right - Turn right onto Itaewon Street 
Turn left on Daesagwan-ro - this street has a light. 
(You will be going through a street with many lights and lots of people walking - near Hannam Village)
At the light pretty far down just before you come to the big intersection (Daesagwan-ro)   turn left a - it's kind of a crazy light - I think it is just flashing, maybe not even a light at all - but more of a 4 way stop.
The restaurant is on your left just a few stores down.  
Park on the street.