Caviar
In the 1800s, caviar was incredibly cheap, an affordable topping for bread, crackers and sandwiches served at bars and saloons.
Although you can harvest fish roe from a wide variety of fish, authentic caviar must come from sturgeon species or belugas, both endangered species today.
Caviar became fashionable in the Russian noble courts, and from there to the world. Today there are more affordable caviar varieties, but the best is still super expensive.
Pound-for-pound caviar might be the most expensive food on the planet. We guess we were born in the wrong era.
