Instant Pot Elote Chowder

Name: Instant Pot Elote Chowder
Ingredients: 4 tablespoons (1/2 stick) salted butter; 1 yellow onion, diced; 1 poblano or green bell pepper, diced; 1 jalapeño pepper, diced (optional, see Jeff's Tips); 3 tablespoons all-purpose flour; 3 cups chicken or garlic broth; 1 tablespoon sherry (optional); 1 pound baby potatoes, skins-on and quartered (see Jeff’s Tips); 16-24 ounces frozen corn kernels; 1 cup heavy cream or half-and-half; 1 cup crumbled cotija cheese (if you can’t find this, you can use grated Parmesan), plus more for topping; 1 packet taco seasoning; 1 teaspoon chili powder (optional), plus more for topping; 1-2 teaspoons seasoned salt (optional, see Jeff’s Tips)