Butternut Squash Soup

Ingredients

• 2 medium potatoes, cubed
• 2 medium butternut squash
• 2 tablespoons butter
• 1 medium onion, chopped
• 1 stalk celery, chopped
• 1 medium carrot, chopped
• 2 large handfuls shiitake mushrooms, chopped
• 1 tablespoon fresh marjoram, sliced
• 1 tablespoon fresh sage leaves, sliced
• 1/4 teaspoon black pepper
• 1/4 teaspoon cayenne pepper
• pinch salt