The sauce preparation method for this food is as follows:

1. Production steps: Mix a certain amount of light soy sauce, a small amount of dark soy sauce, a few drops of rice vinegar, and an appropriate amount of white sugar evenly. Add a small bowl of stock (if there is no stock, use hot water instead, and add chicken essence or MSG to increase the flavor). Add a few more drops of sesame oil and sprinkle with a little white pepper. After mixing evenly, taste it and adjust the salt-to-sugar ratio as needed to ensure the right taste.

Different regions may have different practices, and you can make slight adjustments according to your own preferences. When cooking, the sauce should be flexible to ensure that the final dish is both garlicky and highlights the refreshing taste of the broccoli.