Gomen (Ethiopian Collard Greens)

Name: Gomen (Ethiopian Collard Greens)
Prep time: 10 min
Cook time: 15 min
Total time: 25 min
Ingredients: 3 tablespoons niter kibbeh ((plus an extra tablespoon for later)); 1 large yellow onion (, halved and thinly sliced); 2 cloves garlic (, minced); 1 1/2 teaspoons finely minced fresh ginger; 1 teaspoon ground cumin; 1 teaspoon ground coriander; 1/2 teaspoon salt; 1 bunch collard greens (about 12 ounces) (, washed, thick stems removed, roughly chopped (can also use kale))