The most basic of chamchi kimbap recipes. Feel free to add perilla leaves underneath the tuna before rolling for extra pop, or any number of other fillings — egg omelette, crab stick, pickled radish, and more. More elaborate recipes for chamchi kimbap can be found here, here, here and here, just to name a few.
And, of course, for a fantastic step-by-step tutorial on rolling and making your own sushi (easily applicable to kimbap), check out this gem on Food52 by the lovely Emma Galloway of My Darling Lemon Thyme — who I had the exceeding pleasure of meeting last week!
If you don’t have a sushi mat, don’t worry. This type of “seaweed outside” roll doesn’t really need one — and in fact, the first time I made this I actually didn’t use a mat, and I kind of thought it was easier in some ways. It certainly gave better control over the sushi roll. Just be gentle and patient with it, roll slowly, and make sure to apply even pressure across the entire roll as you go. You don’t have to squeeze forcefully, just gently and evenly, and it should turn out grand.
Find it online: https://tworedbowls.com/2014/06/04/chamchi-kimbap/