Mixed noodles absolutely need a spoonful of chili oil.
Tips
culture
Made by pouring smoking-hot oil (often with Sichuan peppercorn, sesame, five-spice) over coarse chili flakes to bloom their aroma. A local saying places it among Shaanxi's 'Ten Strange Things' (陕西十大怪): 油泼辣子一道菜 — 'chili oil is a dish.'