Serm Suk, a beverage firm owned by Thai Beverage (ThaiBev), will today launch its first teaser ads in various media for the launch of its own "est" carbonated drink, which will hit local retail shelves on November 2. The move is expected to stir Thailand's carbonated drink segment, worth more than Bt36 billion. The launch of "est" carbonated drink in the Thai market follows the end of its bottling and distribution contract with Pepsi-Cola on November 1.