Some may wonder what's the fuss, as it comprises of mainly 'cheap' ingredients of processed food such as spam, sausages, canned baked beans and sliced cheese.

This is closely related to the origins, where after the Korean war, food was extremely scarce and surplus processed foods from the US military bases were useful for the Koreans.
Therefore, Budae (부대) is a general term for a military base in Korean and Jjigae (찌개) means soup/stew.

This is from Donjjang at M Sultan Road, no geotag yet.
Where is your Favourite Army Stew from?