Vegan Italian Vegetable Soup

Ingredients

• 1 tablespoon olive oil
• 1 onion, minced
• 2 garlic cloves, minced
• 3 small carrots, quartered lengthwise and finely diced
• 2 celery stalks, quartered lengthwise and finely diced
• ½ teaspoon salt
• 1 tablespoon dried mixed herbs
• 1 tablespoon dried oregano
• 2 zucchini, chopped into bite-sized chunks
• 4 large vine tomatoes, chopped into bite-sized chunks
• 2 tablespoons tomato paste
• 1 tablespoon balsamic vinegar
• 1 tablespoon apple cider vinegar
• 1 vegetable stock cube
• 1 (14-ounce) can plum tomatoes
• 2 cups boiling water
• ¼ cup basil, coarsely chopped
• ¼ teaspoon black pepper