Black salsify cream soup with roasted walnuts and walnut oil

On cold days, there is hardly anything better than a delicious and warming soup. And since winter has a lot of healthy vegetables ready for us, I have brought you a delicious black salsify cream soup with roasted walnuts and walnut oil today. Black salsifies are among the typical winter vegetables that can be found on vegetable shelves again since October. Even though the root vegetable is also known as winter asparagus, it has little in common with its distant relative from spring. Because the black salsify looks - as the name suggests - like a sc...