Thick and Creamy Tomato Soup

Name: Thick and Creamy Tomato Soup
Cook time: 1 h 50 min
Total time: 1 h 50 min
Cuisine: American
Ingredients: 4 ounces unsalted butter (1 stick; 114g); 4 large carrots (1 pound; 455g), diced (see note); 2 medium yellow onions (1 pound; 455g), diced (see note); 3 large (28-ounce/795g) cans whole tomatoes, crushed roughly by hand; 4 cups (950ml) homemade or store-bought low-sodium chicken stock; 1/4 teaspoon baking soda, plus more as needed (optional); 8 ounces heavy cream (1 cup; 225g); Up to 1 1/4 teaspoons (5g) Diamond Crystal kosher salt; 1/2 teaspoon (1g) freshly ground black pepper, or more to taste; 1/8 teaspoon ground cayenne, or more to taste; 1/2 ounce fresh basil leaves (1 loosely packed cup; 15g), cut into chiffonade