Korean Grilled Steak Tacos with Pineapple Gochujang Salsa

Name: Korean Grilled Steak Tacos with Pineapple Gochujang Salsa
Ingredients: 2 cups pineapple; 2 tablespoons gochujang; 1 small onion, quartered; 1 teaspoon garlic, minced/grated; 1 teaspoon ginger, minced/grated; 1 lime, juice and zest; 2 tablespoons cilantro; 1 tablespoon toasted sesame seeds; 1 teaspoon toasted sesame oil; salt to taste; 12 small corn tortillas, warmed; 1 pound Korean grilled flank steak, thinly sliced, warmed; 2 cups pineapple, optionally grilled and sliced; 2 cups lettuce, shredded; 1 cup cucumber, sliced; 2 green onions, sliced