When one suddenly sees a beautiful woman, one should think to oneself, "Where does her beauty come from? For if she were to die, she would not keep it. And if that is so, where does her beauty come from? It must come from a divine force that has infused itself in her, and given her this force of beauty, this color in her cheeks. So when one finds that the source of this beauty is a divine force, one must ask, "Why should I should I pursue just a part of this force? It is better to cling to the source and the essence of all things, for that is where all beauty is!"
So, too, when one looks at any physical thing, like a vessel. One should think, how did such beauty and form come into this vessel? So the physical matter is not the essence. The beauty and the form are spiritual and vital aspects of the vessel, which is in itself also a part of God above.
So it is when one eats, one should think: the taste and the sweetness of this food come from the force of life and sweetness above - this is its true life-force.