Introduction:Manner Coffee’s discount of 5 yuan for bringing your own cup has been widely popular, but recent incidents where customers were denied the offer for using Nayuki tea cups have sparked discussion. Exactly which plastic cups meet the standards? Why is PP5 material accepted? This article delves into the differences in store enforcement, the safety of plastic materials, and the environmental controversy surrounding bring-your-own cups to help you correctly enjoy the discount.

Manner Coffee has long promoted a 5-yuan discount for bringing your own cup, encouraging many consumers to develop the habit of using reusable containers. However, recently, a customer was refused service when trying to buy coffee with a limited-edition Nayuki tea cup, while others on social media platforms successfully used the same type of cup—exposing inconsistencies in store policies. At the same time, whether disposable plastic takeaway cups can be used as bring-your-own cups has also become a focal point of debate.

One customer visited three Manner stores in a row attempting to use a plastic tea cup, with vastly different results: one store outright refused, while the other two made an exception after confirming that the bottom of the cup was printed with the PP5 mark. Such discrepancies have led consumers to question the fairness of brand enforcement and sparked discussions about the environmental friendliness of single-use plastic cups.

Most opinions hold that a true bring-your-own cup should be a reusable item such as ceramic, glass, or a thermos, rather than a disposable plastic takeaway cup provided by beverage shops. These cups are usually made of PET material, which meets food safety standards but lacks durability and heat resistance, and repeated use may pose risks of chemical leaching.

It is worth noting that some beverage shops have upgraded their takeaway cup materials to PP5—the only type of plastic that is microwave-safe, featuring higher heat resistance and thickness, and can indeed be reused after proper cleaning. Starbucks once launched a bring-your-own cup made of similar material, and the Nayuki tea cup in the successful case also bore the PP5 label, proving its suitability for reuse.

The debate over the original environmental intent continues to unfold. Opponents argue that using any plastic cup goes against the goal of reducing plastic use, while supporters point out that if a PP5 cup is cleaned and reused, it effectively reduces single-use consumption. Store staff revealed that as long as the PP5 material label is shown, such cups are generally not refused.

Consumers should pay attention to the following when using bring-your-own cups in practice: 1) Confirm the number inside the triangular recycling symbol at the bottom of the cup; 2) Prioritize clearly compliant containers such as glass or stainless steel; 3) If using a plastic cup, actively show the PP5 label. These details can help you smoothly enjoy the discount and reduce disputes.

The above content is compiled by CoffeeHunters, a coffee news website.