Old Beijing Fried Sauce Noodles

For this dish, the sweet black bean sauce is slowly cooked with onion, tempeh, and mushrooms to create an appetizing and mouthwatering savoriness. Add a spoonful of sauce to the noodles and gently mix everything together, and you will smell the delightful aroma and be unable to resist picking up the chopsticks and digging in. This signature dish from Beijing is traditionally made with soybean paste, but my mom prefers to use sweet bean paste (tian mian jiang) to make it less salty and more