Starbucks (NASDAQ:SBUX) appears to be gearing up to capture a piece of the $195 billion worldwide carbonated soft drink market. The company has begun testing made-to-order sparkling beverages at some of its Seattle stores. Beverage-lovers can choose among made-to-order sparkling teas, refreshers, root beer, ginger ale, and lemon ale.

If there's one company that has the muscle and resources to get Americans hooked on the concept of customized soda making, it's Starbucks. This could be both a blessing and a curse for SodaStream (NASDAQ:SODA), which is trying to make its own big splash in the at-home beverage making market. In this video, Motley Fool contributor Steve Heller weighs in on how Starbucks could both benefit and threaten SodaStream's ambitions.

Erin Miller owns shares of Starbucks. Fool contributor Steve Heller owns shares of Starbucks. The Motley Fool recommends SodaStream and Starbucks. The Motley Fool owns shares of SodaStream and Starbucks. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.