Minestrone

Name: Minestrone
Ingredients: 2 tablespoons extra-virgin olive oil; 2 carrots, thinly sliced; 2 ribs celery, thinly sliced; 1 large onion, finely chopped; 1 large potato, cubed; Sea salt; Freshly cracked pepper; 6 cups chicken stock; 10 cherry tomatoes, halved; 1 teaspoon dried Greek oregano; 2 zucchinis, thinly sliced; 1 can cannellini beans; 1/2 teaspoon pesto, optional, for garnish; Freshly grated Parmesan; 1 loaf crusty Italian bread, for serving