2 teaspoons vegetable oil
1 1/2 cups chopped onion
3 cloves garlic, pressed
2 teaspoons grated fresh ginger root
1/4 teaspoon ground allspice
1 teaspoon ground turmeric
2 teaspoons ground coriander
1/2 teaspoon ground dried thyme
5 cups vegetable stock
2 cups diced peeled sweet potatoes
3 cups chopped kale
1 cup frozen sliced okra
1 cup coconut milk
1 cup diced tomato
1 cup canned black-eye peas, rinsed and drained
2 tablespoons lime juice, or to taste