Potatoes Madras

3 tablespoons vegetable oil

1 ½ pounds potatoes

cut into 1/2 inch dice

2 ½ cups cauliflower florets

1 large onion

sliced

2 cloves garlic

crushed

1 tablespoon curry powder

½ tablespoon ground ginger

4 ounces dry red lentils

1 (14.4 ounce) can whole tomatoes

chopped

1 ¼ cups vegetable stock

2 tablespoons malt vinegar

1 tablespoon mango chutney

salt and pepper to taste

chopped fresh parsley for garnish