The most expensive liquid in the world is antimatter. Antimatter is a substance composed of antiparticles, which have the same mass as normal particles but opposite charges. When antimatter particles come into contact with their corresponding normal matter particles, they annihilate each other in a burst of energy.
Antimatter is incredibly rare and difficult to produce, which makes it extremely expensive. It is estimated that one milligram of antimatter would cost around $62.5 trillion dollars to produce, which is far more expensive than any other liquid or material on the planet.
Antimatter has potential applications in fields such as medicine, energy production, and space exploration, but currently, its production and storage remain a significant challenge