Alex and Nick, the duo behind Rangoon Bistro, teach us how to make a predecessor to Thai Khao Soi — a rich coconut-and-chicken based noodle soup flavored with turmeric and black pepper and thickened with chickpea flour. The result melts on your tongue and coats our noodles beautifully. The fresh, crisp toppings add a layer of engagement and brightness to the bowl.