Joe's Homemade Mushroom Soup - PantryLink Recipes

Ingredients

• 1.25 cups butter
• 1 large onion , chopped
• 5 pounds sliced fresh mushrooms
• 1.25 cups all-purpose flour
• 2.5 teaspoons ground black pepper
• 1.5 teaspoons salt
• 10 cups milk
• 10 cups chicken broth
• 0.5 cups minced fresh parsley
• 1 pinch ground nutmeg , or to taste
• 0.25 cups sour cream , or as needed