Spinach Soybean Paste Soup

From Crazy Korean Cooking

7 oz	Spinach 시금치
6 cups	Water 물
20	Anchovy (dried) 멸치
1 piece(s)	Kelp (dried, 2" X 2" or 5 cm x 5 cm) 다시마  (optional)
1 tbs	Garlic (minced) 다진 마늘
2	Green Onion 파
2 tbs	Soybean paste 된장
1 tsp	Gochugaru, Red Chili Flakes 고추가루 (optional)
1 tsp	Soy Sauce for Soup (Gukganjang) 국간장  (optional, add salt instead)
¼ tsp	Salt 소금