Creamy Potato Leek Soup
Ingredients 1 tablespoon olive oil 1 tablespoon unsalted butter 3 medium leeks, white and light green parts only, sliced (about 3 cups) 1 ½ lb (650 g) potatoes, peeled and cubed 6 cups (1.5 liters) vegetable stock 2 cups (75 g) cavolo nero ½ cup fresh dill, roughly chopped ½ cup (100 ml) sour cream, […]