Creamy Irish Potato Soup with an Ashkenazi Twist | The Nosher

Name: Creamy Irish Potato Soup with an Ashkenazi Twist | The Nosher
Cuisine: European, British
Ingredients: 2 Tbsp vegetable oil; 2 medium onions, chopped (or use one large leek plus one onion); 2 lbs all-purpose potatoes, peeled and coarsely chopped; 6 cups vegetable stock; salt and freshly ground black pepper to taste; 1/8 tsp freshly ground nutmeg; 3/4 cup cream; 1 Tbsp chopped fresh chives, optional; 6-8 shiitake mushrooms, optional; 2 tsp vegetable oil, optional; dairy sour cream, optional