Pepper Pot Soup

Name: Pepper Pot Soup
Ingredients: 2 tbsp. vegetable oil; 6 scallions, roughly chopped; 3 sprigs thyme, stems removed; 2 cloves garlic, minced; 1 small white onion, roughlychopped; 8 oz. fresh or canned callaloo or spinach, roughly chopped; 4 cups vegetable stock; 3 Scotch bonnet chiles (1 halved; 2 stemmed, seeded, and minced); 1 yellow yam or russet potato, peeled and cut into 1-inch cubes; Kosher salt and freshly ground black pepper