SEATTLE – Starbucks’ test last year of made-to-order Fizzio sodas in Atlanta, Austin, and Japan is now being expanded to 16 states. Root beer, ginger ale and lemon sodas will be available starting this week in the Los Angeles, San Diego, Stockton and Modesto areas of California, and in Arizona, New Mexico, Nevada, Utah, Texas, Oklahoma, Louisiana, Mississippi, Alabama, Georgia, Florida, South Carolina, North Carolina, Virginia and Hawaii.

According to an article in Business Week, Starbucks spokeswoman Linda Mills said the company hopes to expand the sodas nationally in the coming year. The Fizzio rollout this summer also extends to stores in Singapore, South Korea and China. The chain will add location-specific flavors over time, and customers can add fizz to other beverages for 50¢.

The drinks are expected to drive only modest sales growth. Starbucks’s broader goal is to use the sodas and other cold beverages to boost lunch sales, as part of its continuing focus on attracting customers beyond the morning rush.