Instant Pot® Fresh Tomato Soup

Name: Instant Pot® Fresh Tomato Soup
Prep time: 10 min
Cook time: 1 h 10 min
Total time: 1 h 20 min
Cuisine: World Cuisine
Ingredients: 12 cups grape tomatoes; 1 (32 ounce) carton low-sodium chicken broth; 1 large onion, chopped; 2 teaspoons dried minced garlic; 1 teaspoon ground white pepper; 3 large sprigs fresh basil; 1 (14.5 ounce) can low-sodium chicken broth; 6 tablespoons salted butter; 6 tablespoons all-purpose flour; 1 tablespoon white sugar; 1 teaspoon salt, or to taste; 1 teaspoon red pepper flakes, or to taste