wheat (noodles), pork, alcohol (cooking wine), spicy chili oil
approximately 60 minutes (30 minutes for preparation, 30 minutes
cooking time for stir frying, boiling noodles, and making broth)
Sources & References:
https://news.cgtn.com/news/2019-08-28/70-Years-Inherited-Pork-skin-noodles-at-a-Naniing-diner-JuPe5W6aBW/
index.html
Chinese sources:
Documentary video reference [26:36-29:33]: https://www.youtube.com/watch?v=dZlzlYR3euv
Baidu wiki: https://baike.baidu.com/item/%E7%9A%AE%E8%82%9A%E9%9D%A2/8964953
Chinese recipe page: https://www.xiachufang.com/recipe/106467684
Sample lmagery:
https://mp.weixin.qq.com/s/HO1KEBoAzQOnfSmvGZA8Nw