"All the people within reach had suspended their business, or their idleness, to run to the spot and drink the wine." (Dickens 27) In this scene, a large amount of wine was spilled in the streets, and the peasants all rushed to drink it, This represents how blood thirsty the revolution is.
"If Madame Defarge represents Fate, her assistant reveals exactly what kind of Fate is in store: angry and violent vengeance in response to years of tyranny and oppression." (Dickens ) Madame Defarge co-owns the wine shop, and she is associated with violence. She is also a female revolutionary, which shows how the wine is associated with revolution.