This is a Korean specialty paste used as a condiment and traditionally served with leaf wrapped foods called "ssam". The paste is a combination of red chile paste (kochujang) and a fermented soybean paste (like miso).
This spicy condiment can also be served with barbecue meats and even as an addition to soups. It can be thinned and used as a salad dressing or used as a dip for cucumbers and carrots.
Buy ssam jang at Korean markets or other well-stock Asian markets or buy online. See recipes for making your own at home.