In Laura Esquivel's "Like Water for Chocolate," the metaphor of a black hole is used to convey profound emotional emptiness. The protagonist experiences a deep, haunting void within, symbolized by the coldness of a black hole at the center of his chest. This vivid imagery reflects the intense loneliness and despair that he feels, highlighting the emotional journey of the characters.

The mention of black holes also emphasizes the idea that understanding one's feelings can sometimes be elusive, much like the scientific discovery of black holes. The character's pain is palpable, and the metaphor serves to connect personal anguish with a cosmic phenomenon, illustrating how deeply personal struggles can mirror the mysteries of the universe.