While expensive caviar is nothing surprising, a father and son team have taken the luxury delicacy to the absolute extreme — combining the eggs from the extremely rare albino sturgeon with a healthy sprinkling of 22-carat gold flakes. The end result, titled "Strottarga Bianco," is what's being deemed the "world's most expensive" food, with a kilo expected to retail for more than $305,000 (or nearly $1,100 a teaspoon). 

"The golden yellow white spreadable powder that we create can quickly be made into a paste, risotto or put on toasted bread with butter. It only needs very small quantities for the flavour to be spread to a meal," Patrick Gruell, 25, told Yahoo News. "It is certainly not a product for everyone, but there is definitely a market for extremely exclusive products especially when they are something new."

While adding gold flakes to any food would increase it's price, it's the scarcity of the albino sturgeon that's really driving the inflated value of the caviar. The species, found in the southern Caspian Sea in Iran, is critically endangered from overfishing and poaching. Because of its slow reproduction (it takes 19-22 years for a female sturgeon to reach reproductive maturity), scientists estimate that it will be more than 100 years before populations fully recover. 

For both your wallet and the conservation of a species on the brink, we recommend skipping the Strottarga Bianco. For those who still have the itch to spend, may we suggest a much more earth- and animal-friendly bar of the world's most expensive chocolate

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