Availability
United States; approximately 100 Starbucks coffeehouses across Austin and San Antonio, Texas, and St. Louis, Missouri; launched July 28, 2026; small market test; no end date stated.
Starbucks is testing a more carbonated future for afternoon coffee with the Sparkling Cold Brew Sour Spritz, one of several new handcrafted sparkling drinks launched on July 28, 2026 in approximately 100 coffeehouses across Austin, San Antonio and St. Louis. The drink combines cold brew with lemonade, classic syrup and light bubbles, creating a coffee-citrus spritz that sits closer to a non-alcoholic aperitif than a conventional iced coffee. It is part of a broader small-market test covering sparkling Refreshers and a new Starbucks Spritz Collection. The launch deserves attention because Starbucks says the test is designed to measure customer demand, operational execution and the role sparkling beverages could play in its long-term refreshment strategy, particularly for afternoon growth. That makes the product more than another seasonal flavour: it is a direct experiment in whether a major coffee chain can stretch its cold-brew platform into the fast-growing territory between coffee, soda and adult-style refreshment.
Cold Brew Becomes a Spritz
The Sparkling Cold Brew Sour Spritz uses Starbucks cold brew as its base, then adds lemonade, classic syrup and light carbonation before being served over ice. The formula deliberately moves away from the creamy cold foams, milks and dessert-style toppings that define many mainstream cold-coffee launches. Instead, roasted coffee provides bitterness and depth, lemonade adds acidity and citrus brightness, syrup rounds the edges, and bubbles give the drink a lighter, more aperitif-like finish. Starbucks describes the result as a sparkling fusion of coffee and citrus flavours. Within the same test, the chain is also serving fruit- and tea-led spritzes, allowing it to compare how carbonation performs across different beverage bases. Strategically, the drink extends cold brew into an afternoon refreshment occasion rather than treating coffee only as a morning caffeine ritual. It connects with several current trends: sparkling coffee, non-alcoholic spritz culture, coffee-lemonade hybrids, lighter afternoon beverages and menu formats that borrow cues from bars without adding alcohol. Because the drink is handcrafted with existing beverage components, it also tests whether sensory novelty can be created through assembly and carbonation rather than a completely new ingredient system.
Why Starbucks Is Testing Bubbles
The genuine innovation is the attempt to reposition cold brew as a sparkling spritz rather than simply another iced coffee. Starbucks explicitly says the broader test will evaluate customer demand, operational execution and whether sparkling beverages belong in its long-term refreshment strategy, while supporting afternoon growth. The commercial interpretation is therefore unusually clear: the chain is testing a new beverage architecture, not just a flavour. The likely audience includes younger customers, afternoon visitors and people drawn to non-alcoholic spritzes or lighter alternatives to sweet, milk-heavy coffee drinks. Scalability depends less on the recipe than on whether carbonation can be executed consistently and quickly across stores, which is exactly why the company is using a limited market test. If successful, the format could support many combinations across coffee, tea, lemonade and Refreshers. The wider signal is that large coffee chains increasingly see the afternoon as a separate innovation battleground, with sparkling texture and adult-style refreshment cues becoming tools to compete with cafés, soda, energy drinks and alcohol-free social beverages.
Image: Starbucks