The Chengdu Zajiang noodle bowl at Mian Sichuan Noodles is a simple dish — house-made noodles, pork, fried egg, baby bok choy, green onions and a savory sauce. But there’s nothing simple about that sauce. Embracing chiles as a central ingredient, Mian turns an ordinary noodle dish into a regional Chinese take on a classic Bolognese; spiked with Sichuan peppercorns and chili flakes, it’s a hearty and piquant torrent of flavor. But what’s noteworthy about the Chengdu Zajiang noodles — and the entire menu at Mian — is that the spice is about flavor, not just heat. It makes for a sweat-inducing kick, to be sure, but that’s a side benefit to the dish’s deep, rich complexity.