2 tablespoons vegetable oil
4 pounds boneless pork shoulder, cut into 2-inch pieces
Salt and freshly ground pepper
1 large onion, chopped
3 garlic cloves, minced
3 tablespoons minced fresh ginger
1 tablespoon mild curry powder
1 tablespoon ground cumin
1/2 teaspoon ground turmeric
One 14-ounce can diced tomatoes
1 cup unsweetened coconut milk
3 cups chicken stock or low-sodium broth
Steamed rice, chopped cilantro and sliced scallions, for serving