Vegan Potato Soup

Name: Vegan Potato Soup
Prep time: 15 min
Cook time: 45 min
Total time: 1 h
Cuisine: German
Ingredients: 1 tablespoon oil; 1 onion (diced); 3 cloves garlic (minced); 2 stalks celery (or 1⁄2 small celery root) (diced (see notes below)); 2 medium carrots (diced); 4 cups Yukon Gold potatoes (chopped); ½ teaspoon dried marjoram (see notes below); 1 pinch nutmeg; ½ teaspoon salt (plus more to taste); black pepper (to taste); 4 cups vegetable broth or water; 2 whole bay leaves (optional); ⅓ cup dairy-free cream (see notes below); red pepper flakes (optional, to taste); fresh parsley to garnish