Notes on the chili pepper paste: I found the chili paste at whole foods on the international aisle, although a middle eastern market would have it, too. The one I bought was scorching hot, so I suggest starting with a little. You can always add more, but you can’t take it away. Do keep in mind, the heat will mellow overnight.
If you don’t want a huge jar of chili paste that you might not use again, you could also simply add some diced hot chili pepper (like red fresno, to taste). If you want mild kisir, simply add an extra spoonful of tomato paste and leave the chili paste out completely.