Easy Vegetable Soup

Ingredient:

• 3 tablespoons olive oil
• 2 cups chopped onion, 1 large
• 1 ½ cups chopped carrot, 3 to 4 carrots
• 1 ½ cups chopped celery, 2 to 3 stalks
• 2 tablespoons tomato paste
• 4 teaspoons minced garlic, 4 cloves
• 3/4 teaspoon ground fennel seed
• 1/2 teaspoon ground black pepper
• 1/2 teaspoon fine sea salt, plus more to taste
• 1/8 to 1/4 teaspoon crushed red pepper flakes, optional for heat
• 1 (15-ounce) can diced tomatoes with their liquid
• 6 cups (1420ml) stock or broth, see our veggie broth or chicken stock
• 2 cups chopped potato, 2 medium
• 3 to 4 heaped cups chopped or shredded cabbage
• 2 bay leaves
• 1 cup frozen peas
• 1/2 teaspoon apple cider vinegar or fresh lemon juice, optional