Sos Pwa Nwa (Black-Bean Sauce)

Step 1

Heat the oil in a large saucepan over medium heat. Sauté the onion, garlic and scallions until golden, about 8 minutes. Add the beans and 5 cups of water. Bring the water and beans to a boil over medium-high heat, covered, then boil until the beans are soft, about 1 1/2 hours. (This may take longer depending on your beans.) Add water occasionally to keep the beans submerged, if necessary; keep an eye on them, as you may need to add a fair amount of water, depending on your beans and how tight your pot lid is.

Step 2

In a blender, purée the beans and any water left in the pot with an additional 1¾ cups water until very smooth. Force the purée through a fine strainer.

Step 3

Return the bean purée to the pot over medium-low heat. Stir in the coconut milk, butter, parsley, bouillon cube, salt to taste and black pepper. Cook the bean purée, stirring occasionally, until it’s the consistency of a rich gravy. (Adjust with water if necessary.)