Warren Buffett and his right-hand man Charlie Munger advised Coca-Cola not to enter the cannabis business. Buffett’s Berkshire Hathaway is the largest investor in the soft-drink maker, owning a $US19.5 billion stake. Coca-Cola earlier this year held talks with the cannabis producer Aurora Cannabis about teaming up to make CBD-infused beverages. The talks ultimately failed. Watch Coca-Cola trade live . Warren Buffett loves Coca-Cola . So much so that he drinks five cans of the product a day .