Spicy Black-eyed Pea Soup

Ingredients

• 2-1/2 cups dried black-eyed peas
• 3 Tablespoons unsalted butter or vegetable oil
• 3 small yellow onions, chopped
• 2 large cloves garlic, peeled and chopped
• 1 teaspoon ground cinnamon
• 1/2 teaspoon freshly ground black pepper
• 1-1/2 teaspoons ground cumin
• 1/2 teaspoon ground coriander
• 1/2 teaspoon red pepper flakes
• 1 teaspoon salt
• 6-8 cups chicken stock or water
• 2 tomatoes, peeled, seeded, and diced
• 1 Tablespoon brown sugar
• 1 bunch oregano leaves, roughly chopped
• Sour cream or plain yogurt for garnish