The formula of the marinade for the old noodles is: a small bowl of big sauce, half an onion, seven or eight mushrooms, and a proper amount of spices such as star anise, pepper, edible salt and fragrant leaves.

When making marinade, wash and dice mushrooms in advance, peel and wash onions and dice them for later use, and dilute the sauce with a little warm water for later use.

Heat cooking oil in a pot, add diced chives and stir fry, stir fry diced mushrooms evenly, add spices such as star anise pepper, pepper and essence, stir fry for a while, add diluted sauce and cook together, boil for about 10 minutes, and take out the spices to get the prepared marinade.