Instant Pot Boneless Short Ribs and Cauliflower Puttanesca

Name: Instant Pot Boneless Short Ribs and Cauliflower Puttanesca
Ingredients: 1 pound boneless beef short ribs , trimmed and cut into 1½-inch pieces; ¼ teaspoon table salt; ¼ teaspoon pepper; 1 tablespoon extra-virgin olive oil; 5 garlic cloves , minced; 4 anchovy fillets , minced; 1 tablespoon tomato paste; ¼ teaspoon red pepper flakes; 1 (28-ounce) can whole peeled tomatoes , drained with ½ cup juice reserved, halved; 1½ pounds cauliflower florets , cut into 1½-inch pieces; ¼ cup pitted brine-cured black olives , chopped coarse; ¼ cup minced fresh parsley; 2 tablespoons capers , rinsed