Although the classic long-fermented cabbage-based kimchee is fairly easy to make, it does take time. This version with scallions is ridiculously simple and ready in a day or two. I learned how to make it from my friend Russell, a Los Angeles–born cook whose Korean mother made it throughout his childhood. Russell serves it to accompany perfectly steamed rice and simple grilled fish, a lovely combination. I like it chopped and stirred into a bowl of brothy ramen-style noodles, or tucked into a ham sandwich.