Gamja Jorim (Korean Potato Dish)
You can use sweet potatoes in place of yellow potatoes, if desired.
You can use bouillon instead of water.
It can be as spicy or as tame as you like (just adjust the amount of dried chiles you saute in the beginning, or leave them out).
If sauce thickens before potatoes are done, add more water and stir well. If sauce hasn't thickened by the time potatoes are finished, remove lid and boil rapidly, making sure to stir constantly, until desired consistency is reached.