How kombucha became a near $500 million fermented tea empire

It seems like kombucha, the fizzy fermented tea known for its probiotic properties, is having a moment: The U.S. market for the drink went from $152 million dollars in 2015 to $492 million dollars in 2019, according to research from Nielsen. Here's how kombucha went from a niche farmers' market beverage to a global phenomenon.