Recipe: Swedish Curried Fish Soup

Name: Recipe: Swedish Curried Fish Soup
Ingredients: 1 teaspoon butter; 2 onions, thinly sliced; 1 leek, sliced; 2 garlic cloves, very finely chopped; 2 teaspoons medium curry powder, divided; 4 1/2 cups fish or vegetable stock or broth; 10 1/2 ounces thick cod fillets, cut into chunks; 10 1/2 ounces salmon, cut into pieces; 5 1/4 ounces cooked frozen Atlantic prawns or shrimp, defrosted; 1 cup light cream; 2 tablespoons cold-pressed rapeseed oil or olive oil; 1 small bunch of dill, roughly chopped, to serve; 1 small bunch of parsley, roughly chopped, to serve; Chunky bread, to serve