Peanut and Vegetable Soup

Name: Peanut and Vegetable Soup
Ingredients: 2 cups white onions, diced small; 1/4 cup fresh garlic, peeled and chopped; 1/4 cup fresh ginger, peeled and chopped; 2 tablespoons peanut or vegetable oil; 3 teaspoons cumin seeds; 2 teaspoons coriander seeds; 3 small red hot chiles (bird), chopped; 2 cups peeled, seeded and chopped plum tomatoes; 1 teaspoon whole white peppercorns; 1 teaspoon ground turmeric; 1 1/2 cups dry sherry; 2 quarts vegetable broth; 1 1/2 cups coconut milk (about 1 (12-ounce) can); 1 cup smooth natural peanut butter; 2 cups peeled and medium diced turnips; 2 cups peeled and medium diced carrots; 2 cups peeled and medium diced sweet potatoes (yellow if possible); Salt