African Spiced Yellow Split Pea and Sweet Potato Soup

Name: African Spiced Yellow Split Pea and Sweet Potato Soup
Prep time: 10 min
Cook time: 40 min
Total time: 50 min
Cuisine: African
Ingredients: 1 tablespoon olive (grapeseed, or safflower oil); 1 yellow onion (chopped); 2 poblano or hatch chili peppers (chopped); 3 cloves garlic (minced); 1 tablespoon grated or minced ginger; 1 teaspoon ground cumin; 1/2 teaspoon Harissa powder (more to taste--it's spicy, so feel free to add extra if you like heat!); 1/2 teaspoon turmeric; 3/4 teaspoon salt (or to taste); 1 lb sweet skinned and roughly chopped garnet yams or sweet potatoes (about 3 1/2-4 cups); 1 1/4 cups yellow split peas (picked over to remove any grit); 6 cups water or low sodium vegetable broth; 1/2 cup soy (almond or light coconut milk); Black pepper; 1/3 cup chopped green onion tops or cilantro (optional, for garnish)