The US population in general knows little about Korea, especially its food and people. Part of the reason is that a Korean influence has not permeated to the mainstream such as in fashion, music, TV and films. Also, some of the main ingredients of Korean food (the chilli peppers, the garlic) may put off Americans trying the food. Hence, Korean food is really only found in areas where there are communities of Korean Americans and/or Koreans. Chinese and Japanese food have become more mainstream in the US because those groups have had a presence in the US longer than Koreans (my guess). As with most ethnic foods in the US, in order to make it more appealing, the cuisine has undergone a transformation (call it bastardization if you prefer). Foodie_Penguin