Instant Pot Congee

Name: Instant Pot Congee
Ingredients: 1 cup jasmine rice; 1 (2-inch) piece fresh ginger; 4 cloves garlic; 2 medium scallions; 2 (32-ounce) cartons low-sodium chicken or vegetable broth (8 cups); 1 (8 to 12-ounce) can corn kernels (optional); 12 ounces cooked chicken (2 to 2 1/2 cups shredded); Salt; Ground white pepper; Garnish options: chopped roasted peanuts, julienned fresh ginger, thinly sliced scallions, chopped fresh cilantro, fried shallots, century egg, chili oil, toasted sesame oil, soy sauce