Fact (for 2 and maybe for all)
Juk is a predominantly Korean porridge made of grains such as cooked rice, beans, sesame, and azuki beans.
Actual spelling for kuk is guk
Guk (국, Korean pronunciation: [kuk])
also sometimes known as Tang (탕, Korean pronunciation: [tʰaŋ]), is a class of soup-like dishes in Korean cuisine.
Couldn't find anything just called tuk but the word is used with others for a variety of dishes so 'tuk' may possibly be used as an abbreviated name.