Phat Bai Horapha (Thai-Style Beef With Basil and Chiles)

Name: Phat Bai Horapha (Thai-Style Beef With Basil and Chiles)
Prep time: 5 min
Cook time: 15 min
Total time: 20 min
Cuisine: Asian, Thai
Ingredients: 1 pound (450g) flank steak, skirt steak, hanger steak, or flap meat, cut into 1/4-inch-thick strips; 1 tablespoon (15ml) soy sauce, divided; 5 teaspoons (25ml) Asian fish sauce, divided; 1 teaspoon (4g) white sugar; 4 to 6 fresh red or green Thai bird chilies, divided; 6 medium cloves garlic, divided; 1 1/2 tablespoons (20g) palm sugar (see note); 1 small shallot, thinly sliced; 4 makrut lime leaves, very thinly sliced into hairs (central vein discarded), plus more for garnish (see note); 2 tablespoons (30ml) vegetable or canola oil, divided; 2 cups packed Thai purple basil (about 2 ounces; 55g)(see note); Dried Thai chili flakes or red pepper flakes to taste (optional); 1/4 cup fried shallots (see note); Kosher salt; Cooked rice, for serving