Big international drink brands only come around once in a while. Celsius has a chance to be the next one. One of Warren Buffett's best investments was in Coca-Cola. He bought around $1 billion in shares back in 1988, or 6.2% of the company. This occurred after the market crash of 1987 and gave Buffett a buying opportunity at a cheap price-to-earnings ratio (P/E). It was also right before Coca-Cola rapidly expanded internationally. By 1998, the company's stock was up over 10x for Buffett, excluding dividends ...