Raw material

I think you can ask around at the convenient shops in itaewon

i buy from meat friends appreciation its halal and cheap

https://link.coupang.com/a/3eT8S this link above is for Halal cooking oil. You can order halal meat from Azan market (you can download the app). I also saw halal meat in Coupang. Look foor Halal meat in Coupang.

if u have difficulty with coupang online mall, bcoz of the korean language, you may order halal meat from yeshalal.com

if you want to go direct to the shop to buy, asia mart is selling halal , not korean supermarket, but kind like asian shop market.