Why Kopi Luwak could be the most expensive?

Kopi Luwak or civet coffee is the most expensive coffee in the world comes from Indonesia and most of the island of Sumatra.

Why Kopi Luwak could be the most expensive?

Because red coffee berries which have been eaten by and passed through the digestive tract mongoose (civet Indonesia). The civet eat the fruit, but the beans inside pass through their system undigested and unique combination of enzymes in the stomach mongoose which adds to the taste of coffee that give you a sense of bitter coffee. supplies are very limited at only 1,000 kg in the world market each year.

Apparently the internal digestion ends up adds a unique flavor to the beans, removing the bitter flavor, and then beans are then picked up by locals and sold.

You would know if you drank the most expensive coffee in the world, because the quantities of it are tiny amounts.