As the global push to eliminate single-use plastics gains momentum, many Hong Kong residents are shifting toward eco-friendly habits by bringing their own reusable tumblers for takeaway drinks. To evaluate the effectiveness of this movement locally, the Hong Kong Consumer Council recently conducted a comprehensive study across 20 major retail chains—including McCafé, Starbucks, and 7-Eleven—revealing significant gaps between green marketing and actual operational practices.
The investigation, detailed in the 580th issue of Choice magazine, involved 60 separate takeaway transactions performed between November and December 2024. While all surveyed merchants officially accepted reusable containers, the council found that the execution of “green” policies often failed to achieve the primary goal: waste reduction at the source.
Hidden Incentives and Inconsistent Staff Training
The Council’s mystery shoppers discovered that 11 out of the 20 tested brands offered financial incentives for using personal cups. Seven specialty coffee shops and four tea chains provided discounts ranging from $1 to $5, with one location offering a 10% reduction. However, researchers noted that these rewards were poorly publicized, leaving many customers unaware of potential savings. Furthermore, staff at several locations were unfamiliar with their own discount policies, leading to inconsistent application of the rebates.
Beyond pricing, physical limitations posed a barrier. At certain convenience stores, tall tumblers could not fit under the fixed dispensers of automated coffee machines. Due to a lack of clear size guidelines at the point of sale, some customers were forced to use disposable cups despite having their own containers ready.
The “Double-Cupping” Dilemma
The most critical finding highlighted by the Council was the prevalence of “wasteful” preparation methods. In various trials at McCafé and 7CAFÉ, staff were observed preparing beverages in standard plastic or paper cups before pouring the finished drink into the customer’s reusable tumbler. In some instances, ice was measured in a plastic cup and then transferred. These practices effectively negate the environmental benefits of bringing a personal cup, as a disposable container is still soiled and discarded during the process.
The Consumer Council has urged management at these large-scale chains to overhaul their workflows and prioritize “green operations” over convenience. This includes investing in standardized measuring tools that replace disposable cups during the mixing stage.
Consumer Tips for a Smoother Experience
To avoid frustration and maximize environmental impact, the Council suggests that diners:
- Check Dimensions: Opt for tumblers under 15cm in height to ensure compatibility with convenience store coffee machines.
- Verify Capacity: Be aware that many commercial tumblers hold 10% to 20% less volume than their labels claim; choose a size slightly larger than your intended drink.
- Confirm Discounts: Ask staff about “bring-your-own-cup” (BYOC) incentives before paying, as they are not always displayed on digital menus.
A separate quality test on 18 popular travel mugs found that stainless steel models from brands like NOC and STANLEY offered the best thermal retention and leak resistance. Conversely, plastic models showed significantly poorer insulation performance.
Toward a Circular Economy
The Consumer Council’s report serves as a wake-up call for Hong Kong’s food and beverage industry. Improving staff training and transparency regarding sustainability policies is essential for fostering long-term behavioral change. As the city moves toward stricter plastic regulations, the transition from disposable culture to a truly circular economy will require more than just a discount—it requires a fundamental shift in how every cup is poured.