Question: Why did the memory of what they ate in Egypt suddenly come up?
Answer: The people demanded what would fulfill their ego. For this, MAN was spiritual nourishment, spiritual fulfillment from what I give when I fulfill and, turn towards someone. But when egoistic desires arise in me, I begin to feel their need the same way that they exist in these desires. Which means that the people really wanted the Light of fulfillment in these desires, the Light of Chaya and Yechida, which meat symbolizes. They were apparently saying, “We have no need for spiritual fulfillment, we demand meat.” meaning that which was in the ego. Egoistic desires arose in them called the “mixed multitude.”
But these desires specifically arise in a person from the perspective of his spiritual work, by convincing him, “You have no need for this; you can have it all right now if you go in another direction. We promise you both the world to come and everything that you want. Here, take this book, carry out what is written in it and everything will be okay. You don’t need to work on yourself.”
The desires of the “mixed multitude” obligate a person to examine if he is carrying out the Mitzvot (commandments) of this world correctly. They call upon him to maintain the Torah with the help of physical actions, rather than correcting his soul, his relationships with others.
From KabTV’s “Secrets of the Eternal Book” 2/11/15