Rebbe Nachman talks about something called Noam Elyon, a kind of holy sweetness which flows down from Heaven.
This sweetness is so whole, that if your mind isn’t whole and if your emotions aren’t whole, then you can’t taste it. You don’t have a place in which G-d can give you the taste of this holy sweetness.
Matzo is the simplest bread in the world, just flour and water. No salt, no pepper. Rebbe Nachman says that on Yom Tov the Noam Elyon flows from Heaven in simplicity. If you are not whole, you cannot receive it. The matzo we eat gives over to us its simplicity, its wholeness.
Matzo tastes so good because it is a piece of the sweetness of Noam Elyon.
What makes us so perverted? We put so much work into our little piece of bread. What do people do for the few rubles they make? They put their whole heart and soul into it, and each time they do, they become more and more slaves. The matzo we eat on Pesach doesn’t take much time to make. We put the least amount of time into our food, and the rest of the time we have is for doing great things, to be free.