Sigeumchi-namul is a Korean side dish (banchan) made of blanched spinach seasoned with soy sauce, garlic, and sesame oil. The spinach is only slightly cooked, leaving it a little crispy, but still soft and tasty.
full recipe: http://www.maangchi.com/recipe/sigumchi-namul

Because it’s so easy to make and so delicious, it’s a very popular and common side dish among Koreans. For many Koreans an easy, simple everyday meal consists of rice, kimchi, a stew (often doenjang-jjigae), kongnamul-muchim (a bean sprout side dish), and sigeumchi-namul.